[Bug] Tool result submission returns 404 Not Found error

Bug Description
Hello,

I have a persistent Claude tools issue.

Any tool invocation eventually fails with:
“Tool result could not be submitted. The request may have expired or the connection was interrupted.”

In DevTools I consistently see:
POST /api/organizations/.../chat_conversations/.../tool_result → 404 Not Found

At the same time, normal completions succeed:
[COMPLETION] Completion request succeeded on attempt 1

This reproduces across new chats and persists in both Claude Web and Claude Desktop.

The tools themselves appear to execute, but Claude fails when submitting the final tool result back into the conversation.

Please check whether tool-result routing or session state is broken for my account/workspace.

Thank you.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.116
• Feedback ID: e79f00cc-ed1e-487d-a1e9-8e52d7197f8a

Errors

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