For any task, 100% fail with [Background] Task failed: [Planner] Failed to extract valid JSON from response

I installed Qwen2.5-3B-Instruct-q4f16_1-MLC, but run into Failed to extract valid JSON from response no matter what prompt it is

LLM Engine] Successfully loaded: Qwen2.5-3B-Instruct-q4f16_1-MLC
index.ts-Dc_bG3dB.js:62 [Executor] Event: INIT_COMPLETE
index.ts-Dc_bG3dB.js:62 [Executor] Event: PLAN_START
index.ts-Dc_bG3dB.js:1 [Planner] Invoking with message: Create a plan for the following web automation task:

TASK: Go to example.com and tell me what's the...
index.ts-Dc_bG3dB.js:1 [Planner] Response: lod!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...
index.ts-Dc_bG3dB.js:62 [Executor] Event: TASK_FAILED
index.ts-Dc_bG3dB.js:13 [Planner] Conversation history reset
index.ts-Dc_bG3dB.js:13 [Navigator] Conversation history reset
index.ts-Dc_bG3dB.js:141 [Background] Task failed: [Planner] Failed to extract valid JSON from response:
lod!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...
Pe @ index.ts-Dc_bG3dB.js:141
index.ts-Dc_bG3dB.js:141 [Background] Popup disconnected

Reproduce the failure with Qwen2.5-3B-Instruct-q4f16_1-MLC and inspect the planner path around the logged response and JSON extraction error. Compare the model output with the expected plan format; done means a task such as the example.com prompt completes without the planner rejecting the response.