Blender Traceback Error when "Rebuild rig"

[XxMissSporty877241xX]

1.Hi! I am trying to animate in Blender for the first time, and I am having an issue. I am currently using 2.80 blender version
2.I have imported a r15 block rig, and everytime I press the “rebuild rig” button, it shows a traceback error.

I learned that there are python scripts that are added as an add-on to make a RBX animation add on available. I keep seeing an error and I would like to have this issue I’m having resolved.

I read this person’s article and followed the steps, I made sure to locate the humanoid rootpart at (0,0,0), as well as anchor both the rig and the humanoid part (that IS NOT the problem).
I tested out a variety of pre-made python scripts which is the root cause of this problem
https://pastebin.com/raw/Ehh9epGZ
https://gist.githubusercontent.com/anonymous/a3f3401e8bc607366111cbdc2bdfbc71/raw/94a1280b5cab39a1575dc4c1f070ddf38d5ae747/rbxblender.py
https://pastebin.com/raw/aMYdCqX3

robloxblender2.py

Blender2.8x-2.9xRBXanimations.py

Blender rig exporter/animation importer

I’ve developed a plugin for Roblox that can export any Roblox rig into Blender and generate a Blender Armature (rig) equivalent to the Roblox one using the accompanying Blender addon. Then, in Blender an animation can be designed. When done, the Blender addon can be used to generate Roblox animation data equivalent to the animation designed in Blender. Using the Roblox plugin, this can be imported back into Roblox again. Note: Skinned meshes/bones are not supported. If you want to animate a ski…