[Question]: RAG server not working stable

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### Describe your problem

i run ragserver , and hold basic config of **launch_backend_service.sh** but after 2 -3 days, BE not received any request from any client (FE ragflow, postman, curl, ..) help me fix that

Start by reviewing launch_backend_service.sh and the existing issue comments, then reproduce the backend becoming unresponsive after 2–3 days using the reported client types: the RAGFlow frontend, Postman, and curl. Done means identifying the cause and demonstrating that the backend continues receiving requests after the reported interval.

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