Tool call error (cant continue, dead chat)

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Request ID: 71ed8186-b6cd-454a-afac-b265c059298d
{“error”:“ERROR_BAD_REQUEST”,“details”:{“title”:“Tool call error”,“detail”:“Failed to read file.”,“additionalInfo”:{},“buttons”:,“planChoices”:},“isExpected”:true}
ConnectError: [invalid_argument] Error
at I0c.$endAiConnectTransportReportError (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7349:399336)
at dio._doInvokeHandler (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:490:36006)
at dio._invokeHandler (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:490:35748)
at dio._receiveRequest (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:490:34513)
at dio._receiveOneMessage (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:490:33335)
at KTt.value (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:490:31429)
at _e._deliver (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:2962)
at _e.fire (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:3283)
at Sft.fire (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7334:12156)
at MessagePort. (vscode-file://vscode-app/tmp/.mount_Cursorywx2EX/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9835:18403)

Steps to Reproduce

I was using the chat as normal but the eror rhappened out of nowhere

Expected Behavior

Continue working normally

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.0.12
VSCode Version: 1.99.3
Commit: cf556c9696a68b98680ff86651043c97b989fb00
Date: 2025-10-26T03:36:53.227Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Linux x64 6.8.0-85-generic

For AI issues: which model did you use?

Sonnet 4.5

Does this stop you from using Cursor

No - Cursor works, but with this issue

2

Hey, thanks for the report. It looks like a chat state corruption issue. The most common fix is to start a new chat, this has already resolved the same error for other users.

Please try:

  • Start a new chat
  • Retry your prompt

Let me know if this resolves the issue.