Blender Addons do not work in Blender 5.1.2

[aasdsjakdask]

Addon fails to install in Blender 5.1.2

Python: Traceback (most recent call last):
  File "D:\save\SteamLibrary\steamapps\common\Blender\5.1\scripts\addons_core\bl_pkg\bl_extension_ops.py", line 1504, in execute
    cmd_batch = self.exec_command_iter(is_modal)
  File "D:\save\SteamLibrary\steamapps\common\Blender\5.1\scripts\addons_core\bl_pkg\bl_extension_ops.py", line 2598, in exec_command_iter
    self.exec_legacy(source_filepath)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "D:\save\SteamLibrary\steamapps\common\Blender\5.1\scripts\addons_core\bl_pkg\bl_extension_ops.py", line 2731, in exec_legacy
    bpy.types.PREFERENCES_OT_addon_install.execute(self, bpy.context)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
  File "D:\save\SteamLibrary\steamapps\common\Blender\5.1\scripts\startup\bl_operators\userpref.py", line 830, in execute
    bpy.ops.preferences.addon_enable(module=mod.__name__)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Error: register_class(...): already registered as a subclass 'addon_updater_install_popup'