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failed to send message: POST #2620
Description
failed to send message: POST
"http://127.0.0.1:50567/session/ses_6b01d489effeJdVmM34PLytOet/message": 400 Bad Request
{"name": "UnknownError", "data": {"message" : "MC
PClientError: Attempted to send a request
from a closed client"}}
From OpenCode in Cursor.
Opencode version: 0.9.1
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Overload119 commentedon Sep 16, 2025
This happens on the second message.
github-actions commentedon Sep 16, 2025
This issue might be a duplicate of existing issues. Please check:
Feel free to ignore if none of these address your specific case.
rekram1-node commentedon Sep 16, 2025
This happens on every second message or are you saying this happened on a second message
Overload119 commentedon Sep 16, 2025
It happens on the second message; first one seems to go through. Everything after the first will give this error.
rekram1-node commentedon Sep 16, 2025
Didn't notice this was MCP specific at first whoops, which MCP server are you trying to use? This may not be opencode issue
rekram1-node commentedon Sep 16, 2025
Isn't this the same as #1878?
rekram1-node commentedon Dec 28, 2025
[automated] Closing due to 90+ days of inactivity. Feel free to reopen if you still need this!