issue whe3n fixing modle

[k9streaming]

i am having problem to where when i import my model the bones and model dont line up so i use fix model and i get an erorr with line 1195 file armature.py and line1846 file common.py how can i fix this

[k9streaming]

Traceback (most recent call last):
File "C:\Users\chatt\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\cats-blender-plugin-master\tools\armature.py", line 1195, in execute
Common.fix_bone_orientations(armature)
File "C:\Users\chatt\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\cats-blender-plugin-master\tools\common.py", line 1846, in fix_bone_orientations
if len(bone.parent.children) == 1: # if the bone's parent bone only has one child, connect the bones (Don't connect them all because that would mess up hand/finger bones)
AttributeError: 'NoneType' object has no attribute 'children'

location: :-1
is what i get

[Yusarina]

Your better going on the discord for help as this isn't monitored by anyone really.