Ollama Flux Image Generation Crash in v0.23.x — Goroutine Crash After Upgrade

What this error means

processes crash out almost immediately is a Ollama failure pattern reported for developers trying to fix ollama flux image generation crash after upgrading to v0.23.x. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Ollama v0.23.1: Flux image generation crashes immediately with ‘processes crash out almost immediately’. Log shows goroutine crash in server.go:135 with MLX runner. Affects all prompts (e.g., ‘A red apple’). Downgrade to v0.22.1 resolves. Both CLI and API affected.

Common causes

• Developers who upgraded Ollama from v0.22.1 to v0.23.x find that Flux image generation crashes immediately for any prompt. Both CLI and API are affected. Downgrading to v0.22.1 resolves the issue, indicating a regression.
• Ollama v0.23.1: Flux image generation crashes immediately with ‘processes crash out almost immediately’. Log shows goroutine crash in server.go:135 with MLX runner. Affects all prompts (e.g., ‘A red apple’). Downgrade to v0.22.1 resolves. Both CLI and API affected.

Quick fixes

1. Confirm the exact error signature matches processes crash out almost immediately.
2. Check the Ollama account, local tool state, and provider configuration involved in the failing workflow.
3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

• Verify the command, editor, extension, or API client that produced the error.
• Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
• Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

1. Capture the exact error message and the command, editor action, or request that triggered it.
2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
3. Review the source evidence below and compare it with your environment.
4. Apply one change at a time and rerun the smallest failing action.
5. Keep the working fix documented for the team or deployment environment.

How to prevent it

• Keep provider/tool configuration documented.
• Record non-secret diagnostics such as tool version, provider name, model name, and command path.
• Add a lightweight check before CI or production workflows depend on the tool.

Sources checked

• https://github.com/ollama/ollama/issues/15999

Evidence note: Ollama v0.23.1: Flux image generation crashes immediately with ‘processes crash out almost immediately’. Log shows goroutine crash in server.go:135 with MLX runner. Affects all prompts (e.g., ‘A red apple’). Downgrade to v0.22.1 resolves. Both CLI and API affected.

Related errors

• Ollama MLX runner crash on Apple Silicon
• Ollama image generation not working
• Ollama version compatibility issue

FAQ

What should I check first?

Start with the exact processes crash out almost immediately text and the smallest action that reproduces it.

Can I ignore this error?

No. Treat it as a failed Ollama workflow until the root cause is understood.

Is this guaranteed to have one fix?

No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.

How do I know the fix worked?

Rerun the same command, editor action, or request. The fix is working when that action completes without processes crash out almost immediately.