github-starred/ollama
2
0
Fork 0
mirror of https://github.com/ollama/ollama.git synced 2026-05-07 16:40:08 -05:00
Code Issues 14.5k Packages Projects Releases 120 Wiki Activity

[GH-ISSUE #7991] {"error":"json: cannot unmarshal object into Go struct field GenerateRequest.format of type string"} #51624

New Issue
Closed
opened 2026-04-28 20:39:19 -05:00 by GiteaMirror · 3 comments
GiteaMirror commented 2026-04-28 20:39:19 -05:00
Owner
Copy Link

Originally created by @sandersemmel on GitHub (Dec 7, 2024).
Original GitHub issue: https://github.com/ollama/ollama/issues/7991

What is the issue?

I'm trying to have the response be a specific type of JSON. It is mentioned in the documentation:
https://github.com/ollama/ollama/blob/main/docs/api.md#request-structured-outputs

curl -X POST http://localhost:11434/api/generate -H "Content-Type: application/json" -d '{                                                                                
  "model": "phi3",       
  "prompt": "Ollama is 22 years old and is busy saving the world. Respond using JSON",
  "stream": false,
  "format": {
    "type": "object",
    "properties": {
      "age": {
        "type": "integer"
      },
      "available": {
        "type": "boolean"
      }
    },
    "required": [
      "age",
      "available"
    ]
  }
}'

Output:

{"error":"json: cannot unmarshal object into Go struct field GenerateRequest.format of type string"}%

I have also tried other models such as 'llama3:8b' but I get the same message.

OS

macOS

GPU

Nvidia

CPU

No response

Ollama version

ollama version is 0.3.13

Originally created by @sandersemmel on GitHub (Dec 7, 2024). Original GitHub issue: https://github.com/ollama/ollama/issues/7991 ### What is the issue? I'm trying to have the response be a specific type of JSON. It is mentioned in the documentation: https://github.com/ollama/ollama/blob/main/docs/api.md#request-structured-outputs ``` curl -X POST http://localhost:11434/api/generate -H "Content-Type: application/json" -d '{ "model": "phi3", "prompt": "Ollama is 22 years old and is busy saving the world. Respond using JSON", "stream": false, "format": { "type": "object", "properties": { "age": { "type": "integer" }, "available": { "type": "boolean" } }, "required": [ "age", "available" ] } }' ``` Output: > {"error":"json: cannot unmarshal object into Go struct field GenerateRequest.format of type string"}% I have also tried other models such as 'llama3:8b' but I get the same message. ### OS macOS ### GPU Nvidia ### CPU _No response_ ### Ollama version ollama version is 0.3.13
GiteaMirror added the bug label 2026-04-28 20:39:19 -05:00
GiteaMirror commented 2026-04-28 20:39:21 -05:00
Author
Owner
Copy Link

@rick-github commented on GitHub (Dec 8, 2024):

Structured outputs is a feature of 0.5.0 or newer. Upgrade ollama.

<!-- gh-comment-id:2525351932 --> @rick-github commented on GitHub (Dec 8, 2024): Structured outputs is a feature of [0.5.0](https://github.com/ollama/ollama/releases/tag/v0.5.0) or newer. [Upgrade](https://github.com/ollama/ollama/blob/main/docs/faq.md#how-can-i-upgrade-ollama) ollama.
GiteaMirror commented 2026-04-28 20:39:21 -05:00
Author
Owner
Copy Link

@jmorganca commented on GitHub (Dec 8, 2024):

Thanks for the issue (and thanks @rick-github!). As mentioned 0.5 is required for structured outputs: https://ollama.com/download

<!-- gh-comment-id:2525376070 --> @jmorganca commented on GitHub (Dec 8, 2024): Thanks for the issue (and thanks @rick-github!). As mentioned 0.5 is required for structured outputs: https://ollama.com/download
GiteaMirror commented 2026-04-28 20:39:22 -05:00
Author
Owner
Copy Link

@brauliobo commented on GitHub (Apr 19, 2025):

This might happen due to a version mismatch. ollama should warn on run to induce a restart:

braulio @ chicopc ➜  ~  ollama run qwen2.5  
>>> test
Error: error unmarshalling llm prediction response: json: cannot unmarshal number into Go struct field CompletionResponse.done_reason of type string
braulio @ chicopc ➜  ~  ollama --version
ollama version is 0.6.4
Warning: client version is 0.6.5
braulio @ chicopc ➜  ~  sudo systemctl restart ollama ollama@2
Failed to restart ollama@2.service: Unit ollama@2.service not found.
braulio @ chicopc ➜  ~  ollama run qwen2.5
>>> test
Hello! How can I assist you today? Do you have any specific questions or topics you'd like to discuss?
<!-- gh-comment-id:2816740453 --> @brauliobo commented on GitHub (Apr 19, 2025): This might happen due to a version mismatch. ollama should warn on `run` to induce a restart: ``` braulio @ chicopc ➜ ~ ollama run qwen2.5 >>> test Error: error unmarshalling llm prediction response: json: cannot unmarshal number into Go struct field CompletionResponse.done_reason of type string braulio @ chicopc ➜ ~ ollama --version ollama version is 0.6.4 Warning: client version is 0.6.5 braulio @ chicopc ➜ ~ sudo systemctl restart ollama ollama@2 Failed to restart ollama@2.service: Unit ollama@2.service not found. braulio @ chicopc ➜ ~ ollama run qwen2.5 >>> test Hello! How can I assist you today? Do you have any specific questions or topics you'd like to discuss? ```
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
amd
api
app
bug
build
cli
cloud
compatibility
context-length
create
docker
documentation
embeddings
feature request
feedback wanted
good first issue
gpt-oss
gpu
harmony
help wanted
image
install
intel
js
launch
linux
macos
memory
mlx
model
needs more info
networking
nvidia
ollama.com
performance
pull-request
Mirrored from GitHub Pull Request
 python
question
registry
rendering
thinking
tools
top
vulkan
windows
wsl
No Label bug
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
GiteaMirror ninjasurge
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: github-starred/ollama#51624
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?