Broken on 2.93

trying to enable this on 2.93 generates the following -

Traceback (most recent call last): File "/home/pete/Applications/blender-2.93.0-stable+blender-v293-release.84da05a8b806-linux.x86_64-release/2.93/scripts/modules/addon_utils.py", line 386, in enable mod.register() File "/home/pete/.config/blender/2.93/scripts/addons/SimpleAssetManager/init.py", line 602, in register bpy.utils.register_class(cls) ValueError: register_class(...): already registered as a subclass 'SAM_categories'