Cursor Tab does not work (Error in streaming cpp)

[dan.el]

I’m having the following problem with Cursor Tab, essentially it simply doesn’t work.

[info] CURSOR LOG: Finished creating provider!
2025-05-26 18:40:45.990 [info] CURSOR LOG: requestId ee1e6c73-d0c0-4da4-805e-f072eb5904d1  
2025-05-26 18:40:46.370 [info] CURSOR LOG: Error in streaming cpp (connect error) [not_found] Error

Every keyboard press causes 2 entries into the log.

I have tried:

• Restarting Cursor
• Changing DNS
• Using different internet connections
• Reinstalling Cursor
• Having a VPN on/off
• Disabling http2 as suggested by some

Operating system and Cursor version
Macbook Air M3, OSX 15.4.1
Cursor Version: 0.50.7 (Universal)

This is not a lot to go off in order to find the problem, so I would appreciate some help!

[dan.el]

I ended up trying an aggressive approach and deleted ~/Library/Application Support/Cursor. This did solve the problem, but does not explain why it happened in the first place and how to avoid it happening again.

Edit: The same problem as returned, within the space of 2 hours.

[dan.el]

In case this is of use to anyone, I have found this issue might be related to using Jupyter notebooks. The error seems to consistently happen after changing to another .ipynb tab. Strangely, the problem can be fixed by switching to a tab with a different file format such as .py. Switching between .ipynb files then seems to work for a while.

[Altair200333]

that worked perfectly, thanks. (good enough for now xD)