UI Bug

Describe the Bug
The UI is broken.

System Information:
Operating System: Debian GNU/Linux 12
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.0-25-amd64 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700K CPU @ 4.00GHz
Memory: 62.8 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 4060/PCIe/SSE2
Manufacturer: MSI
Product Name: MS-7971
System Version: 1.0

Error Message:
KeyError: 'bpy_prop_collection[key]: key "bl_ext.user_default.blendercam" not found'
Traceback (most recent call last):
File "/home/themightyfozz/.config/blender/4.2/extensions/user_default/cam/ui_panels/buttons_panel.py", line 51, in init
addon_prefs = bpy.context.preferences.addons["bl_ext.user_default.blendercam"].preferences

KeyError: 'bpy_prop_collection[key]: key "bl_ext.user_default.blendercam" not found'

**Additional context**
I tried various Forks but nothing logical seems to fix this. I also tried copying the cam folder from different forks until i ran out of possibilities. 

[qwertukg]

where did u het this UI? Coze I have totally different UI then your or in documentation