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[GH-ISSUE #15180] qwen3.5:35b-a3b-mlx-bf16 posts 500: mlx runner failed: Error: failed to read config.json: #56231

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opened 2026-04-29 10:27:28 -05:00 by GiteaMirror · 1 comment
GiteaMirror commented 2026-04-29 10:27:28 -05:00
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Originally created by @charlesdrakon-cmyk on GitHub (Mar 31, 2026).
Original GitHub issue: https://github.com/ollama/ollama/issues/15180

What is the issue?

Reproduced on Apple Silicon with Ollama 0.19.0.

Model:
qwen3.5:35b-a3b-mlx-bf16

Pull succeeds, but run fails with:
500: mlx runner failed: Error: failed to read config.json:
config "config.json" not found in manifest

Observed on macOS / Apple Silicon. The model also did not appear to pull the usual supporting artifacts compared with standard Qwen pulls.

Relevant log output

OS

No response

GPU

No response

CPU

No response

Ollama version

No response

Originally created by @charlesdrakon-cmyk on GitHub (Mar 31, 2026). Original GitHub issue: https://github.com/ollama/ollama/issues/15180 ### What is the issue? Reproduced on Apple Silicon with Ollama 0.19.0. Model: qwen3.5:35b-a3b-mlx-bf16 Pull succeeds, but run fails with: 500: mlx runner failed: Error: failed to read config.json: config "config.json" not found in manifest Observed on macOS / Apple Silicon. The model also did not appear to pull the usual supporting artifacts compared with standard Qwen pulls. ### Relevant log output ```shell ``` ### OS _No response_ ### GPU _No response_ ### CPU _No response_ ### Ollama version _No response_
GiteaMirror added the bug label 2026-04-29 10:27:28 -05:00
GiteaMirror commented 2026-04-29 10:27:31 -05:00
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@Dio94 commented on GitHub (Mar 31, 2026):

Same issue on other mlx variants qwen3.5:2b-mlx-bf16 & qwen3.5:4b-mlx-bf16 i tried
on my Mac Mini M1 16GB

<!-- gh-comment-id:4165403904 --> @Dio94 commented on GitHub (Mar 31, 2026): Same issue on other mlx variants `qwen3.5:2b-mlx-bf16` & `qwen3.5:4b-mlx-bf16` i tried on my Mac Mini M1 16GB
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Reference: github-starred/ollama#56231
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