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[GH-ISSUE #19867] issue:Memory Leak in Attach Web Page Function Due to Null Bytes in Postgres Embeddings #34551

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opened 2026-04-25 08:35:29 -05:00 by GiteaMirror · 6 comments
GiteaMirror commented 2026-04-25 08:35:29 -05:00
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Originally created by @fgonzalez-glmc on GitHub (Dec 10, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/19867

Check Existing Issues

  • I have searched for any existing and/or related issues.
  • I have searched for any existing and/or related discussions.
  • I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!).
  • I am using the latest version of Open WebUI.

Installation Method

Docker

Open WebUI Version

0.60.41

Ollama Version (if applicable)

No response

Operating System

Debian

Browser (if applicable)

No response

Confirmation

  • I have read and followed all instructions in README.md.
  • I am using the latest version of both Open WebUI and Ollama.
  • I have included the browser console logs.
  • I have included the Docker container logs.
  • I have provided every relevant configuration, setting, and environment variable used in my setup.
  • I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
  • I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
  • Start with the initial platform/version/OS and dependencies used,
  • Specify exact install/launch/configure commands,
  • List URLs visited, user input (incl. example values/emails/passwords if needed),
  • Describe all options and toggles enabled or changed,
  • Include any files or environmental changes,
  • Identify the expected and actual result at each stage,
  • Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

The attach web pages functions works correctly and does not cause a memory leak. null bytes should be correctly managed.

Actual Behavior

The "attach web page" function in OpenWebUI creates a memory leak when attaching some web pages, not all of them. When you attach a web page, it tries to convert and embed the results, but sometimes the results create null bytes in the embedding, so the system Postgres doesn't handle it well and it creates a memory leak. The RAM peaks up, like by 100 MB for example.

Steps to Reproduce

Use the OpenWebUI website for environment variables as a test case : https://docs.openwebui.com/getting-started/env-configuration/

Actual Behavior

  • PostgreSQL rejects the data due to null bytes in the text content
  • A ValueError is raised: A string literal cannot contain NUL (0x00) characters.
  • Memory usage spikes by ~100 MB
  • The web page attachment fails

Related Issues

This is similar to an issue that was fixed recently with native web search in OpenWebUI. Some web search results contained null bytes in the embedding and Postgres didn't like it.

Steps to Reproduce

  1. start a chat
  2. attach a web page like https://docs.openwebui.com/getting-started/env-configuration/
  3. send message and observe memory usage et logs

Logs & Screenshots

Error Logs

2025-12-10 15:49:17.688 | INFO     | open_webui.routers.retrieval:save_docs_to_vector_db:1426 - adding to collection 0e24a0680a3ccfb58e6382fcf4af45c17ceeae11e59914b2b106ce5b973e143
2025-12-10 15:49:18.845 | ERROR    | open_webui.retrieval.vector.dbs.pgvector:insert:358 - Error during insert: A string literal cannot contain NUL (0x00) characters.
Traceback (most recent call last):
 
  File "/usr/local/lib/python3.11/threading.py", line 1002, in _bootstrap
    self._bootstrap_inner()
    │    └ <function Thread._bootstrap_inner at 0xec98188c49a0>
    └ <WorkerThread(AnyIO worker thread, started 260136564093344)>
  File "/usr/local/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
    │    └ <function WorkerThread.run at 0xec97ee6efec0>
    └ <WorkerThread(AnyIO worker thread, started 260136564093344)>
  File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 986, in run
    result = context.run(func, *args)
             │       │   │      └ ()
             │       │   └ functools.partial(<function save_docs_to_vector_db at 0xec97f0ab4e00>, <starlette.requests.Request object at 0xec97c382c150>,...
             │       └ <method 'run' of '_contextvars.Context' objects>
             └ <_contextvars.Context object at 0xec97c849f300>
 
  File "/app/backend/open_webui/routers/retrieval.py", line 1427, in save_docs_to_vector_db
    VECTOR_DB_CLIENT.insert(
    │                └ <function PgvectorClient.insert at 0xec97f4f99d00>
    └ <open_webui.retrieval.vector.dbs.pgvector.PgvectorClient object at 0xec97f4f0aa10>
 
> File "/app/backend/open_webui/retrieval/vector/dbs/pgvector.py", line 351, in insert
    self.session.bulk_save_objects(new_items)
    │    │       │                 └ [<open_webui.retrieval.vector.dbs.pgvector.DocumentChunk object at 0xec97a787acd0>, <open_webui.retrieval.vector.dbs.pgvector...
    │    │       └ <function scoped_session.bulk_save_objects at 0xec97f6490400>
    │    └ <sqlalchemy.orm.scoping.scoped_session object at 0xec97f4f0f890>
    └ <open_webui.retrieval.vector.dbs.pgvector.PgvectorClient object at 0xec97f4f0aa10>
 
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/scoping.py", line 1359, in bulk_save_objects
    return self._proxied.bulk_save_objects(
           │    └ <property object at 0xec97f6439170>
           └ <sqlalchemy.orm.scoping.scoped_session object at 0xec97f4f0f890>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/session.py", line 4586, in bulk_save_objects
    self._bulk_save_mappings(
    │    └ <function Session._bulk_save_mappings at 0xec97f6601580>
    └ <sqlalchemy.orm.session.Session object at 0xec97c203bad0>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/session.py", line 4763, in _bulk_save_mappings
    with util.safe_reraise():
         │    └ <class 'sqlalchemy.util.langhelpers.safe_reraise'>
         └ <module 'sqlalchemy.util' from '/usr/local/lib/python3.11/site-packages/sqlalchemy/util/__init__.py'>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/util/langhelpers.py", line 146, in __exit__
    raise exc_value.with_traceback(exc_tb)
          │         │              └ <traceback object at 0xec97c39bc3c0>
          │         └ <method 'with_traceback' of 'BaseException' objects>
          └ ValueError('A string literal cannot contain NUL (0x00) characters.')
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/session.py", line 4752, in _bulk_save_mappings
    bulk_persistence._bulk_insert(
    │                └ <function _bulk_insert at 0xec97f6578f40>
    └ <module 'sqlalchemy.orm.bulk_persistence' from '/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/bulk_persistence.py'>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/bulk_persistence.py", line 222, in _bulk_insert
    result = persistence._emit_insert_statements(
             │           └ <function _emit_insert_statements at 0xec97f6578900>
             └ <module 'sqlalchemy.orm.persistence' from '/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/persistence.py'>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/persistence.py", line 1048, in _emit_insert_statements
    result = connection.execute(
             │          └ <function Connection.execute at 0xec9815b3f7e0>
             └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1416, in execute
    return meth(
           └ <bound method ClauseElement._execute_on_connection of <sqlalchemy.sql.dml.Insert object at 0xec97c94a1d10>>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/sql/elements.py", line 516, in _execute_on_connection
    return connection._execute_clauseelement(
           │          └ <function Connection._execute_clauseelement at 0xec9815b3fb00>
           └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1638, in _execute_clauseelement
    ret = self._execute_context(
          │    └ <function Connection._execute_context at 0xec9815b3fce0>
          └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1841, in _execute_context
    return self._exec_insertmany_context(dialect, context)
           │    │                        │        └ <sqlalchemy.dialects.postgresql.psycopg2.PGExecutionContext_psycopg2 object at 0xec97a68c6250>
           │    │                        └ <sqlalchemy.dialects.postgresql.psycopg2.PGDialect_psycopg2 object at 0xec97f4f77ed0>
           │    └ <function Connection._exec_insertmany_context at 0xec9815b3fe20>
           └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 2123, in _exec_insertmany_context
    self._handle_dbapi_exception(
    │    └ <function Connection._handle_dbapi_exception at 0xec9815b38040>
    └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 2355, in _handle_dbapi_exception
    raise exc_info[1].with_traceback(exc_info[2])
          │                          └ (<class 'ValueError'>, ValueError('A string literal cannot contain NUL (0x00) characters.'), <traceback object at 0xec97c1ede...
          └ (<class 'ValueError'>, ValueError('A string literal cannot contain NUL (0x00) characters.'), <traceback object at 0xec97c1ede...
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 2115, in _exec_insertmany_context
    dialect.do_execute(
    │       └ <function DefaultDialect.do_execute at 0xec981586fc40>
    └ <sqlalchemy.dialects.postgresql.psycopg2.PGDialect_psycopg2 object at 0xec97f4f77ed0>
  File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/default.py", line 942, in do_execute
    cursor.execute(statement, parameters)
    │      │       │          └ {'id__0': '7e45a657-fde5-4095-9b94-3fa6ccb0a302', 'collection_name__0': '0e24a0680a3ccfb58e6382fcf4af45c17ceeae11e59914b2b106...
    │      │       └ 'INSERT INTO document_chunk (id, vector, collection_name, text, vmetadata) VALUES (%(id__0)s, %(vector__0)s, %(collection_nam...
    │      └ <method 'execute' of 'psycopg2.extensions.cursor' objects>
    └ <cursor object at 0xec97c9ef71f0; closed: -1>
 
ValueError: A string literal cannot contain NUL (0x00) characters.
2025-12-10 15:49:18.956 | ERROR    | open_webui.routers.retrieval:save_docs_to_vector_db:1435 - A string literal cannot contain NUL (0x00) characters.
 
--- Duplicate traceback block (26 lines) ---
 
ValueError: A string literal cannot contain NUL (0x00) characters.
2025-12-10 15:49:19.068 | ERROR    | open_webui.routers.retrieval:process_web:1757 - A string literal cannot contain NUL (0x00) characters.
 
--- Duplicate traceback block (106 lines) ---
 
ValueError: A string literal cannot contain NUL (0x00) characters.
2025-12-10 15:49:19.182 | INFO     | uvicorn.protocols.http.httptools_impl:send:476 - 15.157.52.23:0 - "POST /api/v1/retrieval/process/web HTTP/1.1" 400
2025-12-10 15:49:38.734 | INFO     | uvicorn.protocols.http.httptools_impl:send:476 - 15.157.52.23:0 - "GET /_app/version.json HTTP/1.1" 200
2025-12-10 15:49:45.195 | INFO     | uvicorn.protocols.http.httptools_impl:send:476 - 45.73.69.53:0 - "GET /_app/version.json HTTP/1.1" 200

Additional Information

No response

Originally created by @fgonzalez-glmc on GitHub (Dec 10, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/19867 ### Check Existing Issues - [x] I have searched for any existing and/or related issues. - [x] I have searched for any existing and/or related discussions. - [x] I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!). - [x] I am using the latest version of Open WebUI. ### Installation Method Docker ### Open WebUI Version 0.60.41 ### Ollama Version (if applicable) _No response_ ### Operating System Debian ### Browser (if applicable) _No response_ ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** Open WebUI and Ollama. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.** - [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc). - [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps: - Start with the initial platform/version/OS and dependencies used, - Specify exact install/launch/configure commands, - List URLs visited, user input (incl. example values/emails/passwords if needed), - Describe all options and toggles enabled or changed, - Include any files or environmental changes, - Identify the expected and actual result at each stage, - Ensure any reasonably skilled user can follow and hit the same issue. ### Expected Behavior The attach web pages functions works correctly and does not cause a memory leak. null bytes should be correctly managed. ### Actual Behavior The "attach web page" function in OpenWebUI creates a memory leak when attaching some web pages, not all of them. When you attach a web page, it tries to convert and embed the results, but sometimes the results create null bytes in the embedding, so the system Postgres doesn't handle it well and it creates a memory leak. The RAM peaks up, like by 100 MB for example. ## Steps to Reproduce Use the OpenWebUI website for environment variables as a test case : https://docs.openwebui.com/getting-started/env-configuration/ ## Actual Behavior - PostgreSQL rejects the data due to null bytes in the text content - A `ValueError` is raised: `A string literal cannot contain NUL (0x00) characters.` - Memory usage spikes by ~100 MB - The web page attachment fails ## Related Issues This is similar to an issue that was fixed recently with native web search in OpenWebUI. Some web search results contained null bytes in the embedding and Postgres didn't like it. ### Steps to Reproduce 1. start a chat 2. attach a web page like https://docs.openwebui.com/getting-started/env-configuration/ 3. send message and observe memory usage et logs ### Logs & Screenshots ## Error Logs ``` 2025-12-10 15:49:17.688 | INFO | open_webui.routers.retrieval:save_docs_to_vector_db:1426 - adding to collection 0e24a0680a3ccfb58e6382fcf4af45c17ceeae11e59914b2b106ce5b973e143 2025-12-10 15:49:18.845 | ERROR | open_webui.retrieval.vector.dbs.pgvector:insert:358 - Error during insert: A string literal cannot contain NUL (0x00) characters. Traceback (most recent call last): File "/usr/local/lib/python3.11/threading.py", line 1002, in _bootstrap self._bootstrap_inner() │ └ <function Thread._bootstrap_inner at 0xec98188c49a0> └ <WorkerThread(AnyIO worker thread, started 260136564093344)> File "/usr/local/lib/python3.11/threading.py", line 1045, in _bootstrap_inner self.run() │ └ <function WorkerThread.run at 0xec97ee6efec0> └ <WorkerThread(AnyIO worker thread, started 260136564093344)> File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 986, in run result = context.run(func, *args) │ │ │ └ () │ │ └ functools.partial(<function save_docs_to_vector_db at 0xec97f0ab4e00>, <starlette.requests.Request object at 0xec97c382c150>,... │ └ <method 'run' of '_contextvars.Context' objects> └ <_contextvars.Context object at 0xec97c849f300> File "/app/backend/open_webui/routers/retrieval.py", line 1427, in save_docs_to_vector_db VECTOR_DB_CLIENT.insert( │ └ <function PgvectorClient.insert at 0xec97f4f99d00> └ <open_webui.retrieval.vector.dbs.pgvector.PgvectorClient object at 0xec97f4f0aa10> > File "/app/backend/open_webui/retrieval/vector/dbs/pgvector.py", line 351, in insert self.session.bulk_save_objects(new_items) │ │ │ └ [<open_webui.retrieval.vector.dbs.pgvector.DocumentChunk object at 0xec97a787acd0>, <open_webui.retrieval.vector.dbs.pgvector... │ │ └ <function scoped_session.bulk_save_objects at 0xec97f6490400> │ └ <sqlalchemy.orm.scoping.scoped_session object at 0xec97f4f0f890> └ <open_webui.retrieval.vector.dbs.pgvector.PgvectorClient object at 0xec97f4f0aa10> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/scoping.py", line 1359, in bulk_save_objects return self._proxied.bulk_save_objects( │ └ <property object at 0xec97f6439170> └ <sqlalchemy.orm.scoping.scoped_session object at 0xec97f4f0f890> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/session.py", line 4586, in bulk_save_objects self._bulk_save_mappings( │ └ <function Session._bulk_save_mappings at 0xec97f6601580> └ <sqlalchemy.orm.session.Session object at 0xec97c203bad0> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/session.py", line 4763, in _bulk_save_mappings with util.safe_reraise(): │ └ <class 'sqlalchemy.util.langhelpers.safe_reraise'> └ <module 'sqlalchemy.util' from '/usr/local/lib/python3.11/site-packages/sqlalchemy/util/__init__.py'> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/util/langhelpers.py", line 146, in __exit__ raise exc_value.with_traceback(exc_tb) │ │ └ <traceback object at 0xec97c39bc3c0> │ └ <method 'with_traceback' of 'BaseException' objects> └ ValueError('A string literal cannot contain NUL (0x00) characters.') File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/session.py", line 4752, in _bulk_save_mappings bulk_persistence._bulk_insert( │ └ <function _bulk_insert at 0xec97f6578f40> └ <module 'sqlalchemy.orm.bulk_persistence' from '/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/bulk_persistence.py'> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/bulk_persistence.py", line 222, in _bulk_insert result = persistence._emit_insert_statements( │ └ <function _emit_insert_statements at 0xec97f6578900> └ <module 'sqlalchemy.orm.persistence' from '/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/persistence.py'> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/orm/persistence.py", line 1048, in _emit_insert_statements result = connection.execute( │ └ <function Connection.execute at 0xec9815b3f7e0> └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1416, in execute return meth( └ <bound method ClauseElement._execute_on_connection of <sqlalchemy.sql.dml.Insert object at 0xec97c94a1d10>> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/sql/elements.py", line 516, in _execute_on_connection return connection._execute_clauseelement( │ └ <function Connection._execute_clauseelement at 0xec9815b3fb00> └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1638, in _execute_clauseelement ret = self._execute_context( │ └ <function Connection._execute_context at 0xec9815b3fce0> └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1841, in _execute_context return self._exec_insertmany_context(dialect, context) │ │ │ └ <sqlalchemy.dialects.postgresql.psycopg2.PGExecutionContext_psycopg2 object at 0xec97a68c6250> │ │ └ <sqlalchemy.dialects.postgresql.psycopg2.PGDialect_psycopg2 object at 0xec97f4f77ed0> │ └ <function Connection._exec_insertmany_context at 0xec9815b3fe20> └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 2123, in _exec_insertmany_context self._handle_dbapi_exception( │ └ <function Connection._handle_dbapi_exception at 0xec9815b38040> └ <sqlalchemy.engine.base.Connection object at 0xec97a6898210> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 2355, in _handle_dbapi_exception raise exc_info[1].with_traceback(exc_info[2]) │ └ (<class 'ValueError'>, ValueError('A string literal cannot contain NUL (0x00) characters.'), <traceback object at 0xec97c1ede... └ (<class 'ValueError'>, ValueError('A string literal cannot contain NUL (0x00) characters.'), <traceback object at 0xec97c1ede... File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 2115, in _exec_insertmany_context dialect.do_execute( │ └ <function DefaultDialect.do_execute at 0xec981586fc40> └ <sqlalchemy.dialects.postgresql.psycopg2.PGDialect_psycopg2 object at 0xec97f4f77ed0> File "/usr/local/lib/python3.11/site-packages/sqlalchemy/engine/default.py", line 942, in do_execute cursor.execute(statement, parameters) │ │ │ └ {'id__0': '7e45a657-fde5-4095-9b94-3fa6ccb0a302', 'collection_name__0': '0e24a0680a3ccfb58e6382fcf4af45c17ceeae11e59914b2b106... │ │ └ 'INSERT INTO document_chunk (id, vector, collection_name, text, vmetadata) VALUES (%(id__0)s, %(vector__0)s, %(collection_nam... │ └ <method 'execute' of 'psycopg2.extensions.cursor' objects> └ <cursor object at 0xec97c9ef71f0; closed: -1> ValueError: A string literal cannot contain NUL (0x00) characters. 2025-12-10 15:49:18.956 | ERROR | open_webui.routers.retrieval:save_docs_to_vector_db:1435 - A string literal cannot contain NUL (0x00) characters. --- Duplicate traceback block (26 lines) --- ValueError: A string literal cannot contain NUL (0x00) characters. 2025-12-10 15:49:19.068 | ERROR | open_webui.routers.retrieval:process_web:1757 - A string literal cannot contain NUL (0x00) characters. --- Duplicate traceback block (106 lines) --- ValueError: A string literal cannot contain NUL (0x00) characters. 2025-12-10 15:49:19.182 | INFO | uvicorn.protocols.http.httptools_impl:send:476 - 15.157.52.23:0 - "POST /api/v1/retrieval/process/web HTTP/1.1" 400 2025-12-10 15:49:38.734 | INFO | uvicorn.protocols.http.httptools_impl:send:476 - 15.157.52.23:0 - "GET /_app/version.json HTTP/1.1" 200 2025-12-10 15:49:45.195 | INFO | uvicorn.protocols.http.httptools_impl:send:476 - 45.73.69.53:0 - "GET /_app/version.json HTTP/1.1" 200 ``` ### Additional Information _No response_
GiteaMirror added the testing wantedbug labels 2026-04-25 08:35:29 -05:00
GiteaMirror commented 2026-04-25 08:35:31 -05:00
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@owui-terminator[bot] commented on GitHub (Dec 10, 2025):

🔍 Similar Issues Found

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  1. #16873 issue: Embedding fails with “The content provided is empty” using Open-WebUI API
    by ka-admin • Aug 24, 2025 • bug

  2. #19421 issue: save embedding to vector DB freezes the whole application
    by FBH93 • Nov 24, 2025 • bug

  3. #19281 issue: RAG Template applied with "Bypass Embedding and Retrieval" enabled
    by lucyknada • Nov 19, 2025 • bug

  4. #16854 issue: Fail to Embed HTML files
    by tthung282 • Aug 23, 2025 • bug

  5. #17720 issue: With "bypass embedding and retrieval" attached files are still sent in a RAG system prompt not with the user message
    by mramendi • Sep 24, 2025 • bug

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<!-- gh-comment-id:3639171810 --> @owui-terminator[bot] commented on GitHub (Dec 10, 2025): 🔍 **Similar Issues Found** I found some existing issues that might be related to this one. Please check if any of these are duplicates or contain helpful solutions: 1. [#19723](https://github.com/open-webui/open-webui/issues/19723) **issue: "Async Embedding Processing" does not seem to have an effect** *by Elettrotecnica • Dec 03, 2025 • `bug`* 2. [#19264](https://github.com/open-webui/open-webui/issues/19264) **issue: Uploaded file hash remains in database even when OCR fails, causing false duplicate detection** *by flefevre • Nov 18, 2025 • `bug`* 3. [#18201](https://github.com/open-webui/open-webui/issues/18201) **issue: Memory leak and database insertion failure when using Google PSE web search with PostgreSQL/pgvector** *by fgonzalez-glmc • Oct 09, 2025 • `bug`* 4. [#19562](https://github.com/open-webui/open-webui/issues/19562) **[Bug] Attach Webpage fails with metadata type error in v0.6.37+** *by naruto7g • Nov 28, 2025 • `bug`* 5. [#19474](https://github.com/open-webui/open-webui/issues/19474) **issue: Embeddings using API not working** *by curious-broccoli • Nov 25, 2025 • `bug`* <details> <summary>Show 5 more related issues</summary> 6. [#16873](https://github.com/open-webui/open-webui/issues/16873) **issue: Embedding fails with “The content provided is empty” using Open-WebUI API** *by ka-admin • Aug 24, 2025 • `bug`* 7. [#19421](https://github.com/open-webui/open-webui/issues/19421) **issue: save embedding to vector DB freezes the whole application** *by FBH93 • Nov 24, 2025 • `bug`* 8. [#19281](https://github.com/open-webui/open-webui/issues/19281) **issue: RAG Template applied with "Bypass Embedding and Retrieval" enabled** *by lucyknada • Nov 19, 2025 • `bug`* 9. [#16854](https://github.com/open-webui/open-webui/issues/16854) **issue: Fail to Embed HTML files** *by tthung282 • Aug 23, 2025 • `bug`* 10. [#17720](https://github.com/open-webui/open-webui/issues/17720) **issue: With "bypass embedding and retrieval" attached files are still sent in a RAG system prompt not with the user message** *by mramendi • Sep 24, 2025 • `bug`* </details> --- 💡 **Tips:** - If this is a duplicate, please consider closing this issue and adding any additional details to the existing one - If you found a solution in any of these issues, please share it here to help others *This comment was generated automatically by a bot.* Please react with a 👍 if this comment was helpful, or a 👎 if it was not.
GiteaMirror commented 2026-04-25 08:35:32 -05:00
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@le-patenteux commented on GitHub (Dec 10, 2025):

It is not a duplicate, as this issue was present in the search functions and was fixed there.
But is now present in another function (Attach URL)

I am not technical enough to know how this is all managed behind the scene, but the NULL byte issue should be handled globally as to avoid that new features have the same bug.

Have a nice day amazing devs and community.

<!-- gh-comment-id:3639188725 --> @le-patenteux commented on GitHub (Dec 10, 2025): It is not a duplicate, as this issue was present in the search functions and was fixed there. But is now present in another function (Attach URL) I am not technical enough to know how this is all managed behind the scene, but the NULL byte issue should be handled globally as to avoid that new features have the same bug. Have a nice day amazing devs and community.
GiteaMirror commented 2026-04-25 08:35:33 -05:00
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@Classic298 commented on GitHub (Dec 21, 2025):

@le-patenteux ooking at the issue more carefully:

The "memory leak" claim is a misdiagnosis. The actual bug is a failed database insertion due to null bytes (\u0000) causing PostgreSQL to reject the data with:
ValueError: A string literal cannot contain NUL (0x00) characters.

<!-- gh-comment-id:3678736288 --> @Classic298 commented on GitHub (Dec 21, 2025): @le-patenteux ooking at the issue more carefully: The "memory leak" claim is a misdiagnosis. The actual bug is a failed database insertion due to null bytes (\u0000) causing PostgreSQL to reject the data with: ValueError: A string literal cannot contain NUL (0x00) characters.
GiteaMirror commented 2026-04-25 08:35:35 -05:00
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@Classic298 commented on GitHub (Dec 21, 2025):

fixed in dev

<!-- gh-comment-id:3678744384 --> @Classic298 commented on GitHub (Dec 21, 2025): fixed in dev
GiteaMirror commented 2026-04-25 08:35:36 -05:00
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@le-patenteux commented on GitHub (Dec 21, 2025):

@le-patenteux ooking at the issue more carefully:

The "memory leak" claim is a misdiagnosis. The actual bug is a failed database insertion due to null bytes (\u0000) causing PostgreSQL to reject the data with: ValueError: A string literal cannot contain NUL (0x00) characters.

I can reproduce the memory leak invariably, it was doing the same thing back when web-search had the null byte issue.

When Open-Webui tries to insert Null value in a string literal in the PostgreSQL DB, the error occurs, then the RAM useage increases by about 100MB, invariably.
I think that the null byte thing needs to be fixed at a lower level, in the INSERT funtion of open-webui, for any other scenario. (I have the knowlege to diagnose the issue, but not to fix it... But I can ensure OWUI had the same memory leak issue with the search function a month ago before it got fixed.
See #17775, #17723, #18207

<!-- gh-comment-id:3678764925 --> @le-patenteux commented on GitHub (Dec 21, 2025): > [@le-patenteux](https://github.com/le-patenteux) ooking at the issue more carefully: > > The "memory leak" claim is a misdiagnosis. The actual bug is a failed database insertion due to null bytes (\u0000) causing PostgreSQL to reject the data with: ValueError: A string literal cannot contain NUL (0x00) characters. I can reproduce the memory leak invariably, it was doing the same thing back when web-search had the null byte issue. When Open-Webui tries to insert Null value in a string literal in the PostgreSQL DB, the error occurs, then the RAM useage increases by about 100MB, invariably. I think that the null byte thing needs to be fixed at a lower level, in the INSERT funtion of open-webui, for any other scenario. (I have the knowlege to diagnose the issue, but not to fix it... But I can ensure OWUI had the same memory leak issue with the search function a month ago before it got fixed. See #17775, #17723, #18207
GiteaMirror commented 2026-04-25 08:35:38 -05:00
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@Classic298 commented on GitHub (Dec 21, 2025):

@le-patenteux this is not really a memory leak

either way, the web add was fixed, pls point us to other areas where issues arise and we'll fix it there

for now pls test dev and let me know if this specific issue is fixed (it should)

<!-- gh-comment-id:3678767181 --> @Classic298 commented on GitHub (Dec 21, 2025): @le-patenteux this is not really a memory leak either way, the web add was fixed, pls point us to other areas where issues arise and we'll fix it there for now pls test dev and let me know if this specific issue is fixed (it should)
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