Bed Mesh Error

[nefelim4ag]

You have BDSensor

Quad_gantry_level error

Recent updates have changed the internal code. All external custom probe extensions are broken until their authors can update them. (at least Eddy-ng, Carto, Beacon). You can either flash the Carto board with the mainline Klipper and, by so doing, remove the custom extension, or rollback and wait for the Carto code to update. Hope that helps. -Timofey.

v0.13.0-508-gbe1c97ff0
This should work, I think.

cd ~/klipper
git checkout 3c56eb7f6
sudo systemctl restart klipper

(If not, you can revert further one by one change with git checkout HEAD^)

Klipper Versioning, Downgrading, and Bisecting

Klipper Versioning, Downgrading, and Bisecting Table of Contents Understanding Klipper’s Versioning How to Read Version Information Downgrading to a Previous Version Identifying the Desired Commit Soft Reset (Keep Local Changes) Hard Reset (Clean Slate) Using git bisect to Find Problematic Commits Understanding Klipper’s Versioning Klipper uses Git (hosted on GitHub) to manage its source code and version history. You can find the currently running versions of Klipper in…

Hope that helps.
-Timofey