我的 openclaw 突然废了，问什么问题都是空回答

提问后日志：
08:10:58 debug diagnostic {"subsystem":"diagnostic"} lane enqueue: lane=session:agent:main:main queueSize=1
08:10:58 debug diagnostic {"subsystem":"diagnostic"} lane dequeue: lane=session:agent:main:main waitMs=7 queueSize=0
08:10:58 debug diagnostic {"subsystem":"diagnostic"} lane task done: lane=session:agent:main:main duratiOnMs=3 active=0 queued=0
08:10:58 debug diagnostic {"subsystem":"diagnostic"} lane enqueue: lane=main queueSize=1
08:10:58 debug diagnostic {"subsystem":"diagnostic"} lane dequeue: lane=main waitMs=2 queueSize=0
08:10:58 debug diagnostic {"subsystem":"diagnostic"} lane task done: lane=main duratiOnMs=1 active=0 queued=0
08:10:58 debug agent/embedded {"subsystem":"agent/embedded"} embedded run start: runId=83369950-e15d-431d-b8a5-461273f1f8a9 sessiOnId=c895ea57-74df-455e-ab39-77df3d145ff8 provider=bailian model=qwen3.5-plus thinking=off messageChannel=webchat
08:10:58 debug diagnostic {"subsystem":"diagnostic"} run registered: sessiOnId=c895ea57-74df-455e-ab39-77df3d145ff8 totalActive=1
08:10:58 debug agent/embedded {"subsystem":"agent/embedded"} embedded run prompt start: runId=83369950-e15d-431d-b8a5-461273f1f8a9 sessiOnId=c895ea57-74df-455e-ab39-77df3d145ff8
08:10:58 debug agent/embedded {"subsystem":"agent/embedded"} embedded run agent start: runId=83369950-e15d-431d-b8a5-461273f1f8a9
08:11:00 debug agent/embedded {"subsystem":"agent/embedded"} embedded run agent end: runId=83369950-e15d-431d-b8a5-461273f1f8a9
08:11:00 debug agent/embedded {"subsystem":"agent/embedded"} embedded run prompt end: runId=83369950-e15d-431d-b8a5-461273f1f8a9 sessiOnId=c895ea57-74df-455e-ab39-77df3d145ff8 duratiOnMs=1402
08:11:00 debug diagnostic {"subsystem":"diagnostic"} run cleared: sessiOnId=c895ea57-74df-455e-ab39-77df3d145ff8 totalActive=0
08:11:00 debug agent/embedded {"subsystem":"agent/embedded"} embedded run done: runId=83369950-e15d-431d-b8a5-461273f1f8a9 sessiOnId=c895ea57-74df-455e-ab39-77df3d145ff8 duratiOnMs=1509 aborted=false

输出是空的
试过重启服务，没用