Conversation could not be opened

When I tried to Open the conversation where I paused I get a error message saying "Oops, an error has occurred" Even If I open a previous chat same error appears . I can open a new chat and start chatting but after a few moments later same error appears.
So could not continue working

<img width="1280" height="675" alt="Image" src="https://github.com/user-attachments/assets/053c7269-e997-4e65-a5fc-f3ec962776a7" />