Error installing ARTv2 for Maya integration

I’m a beginner character animator trying to install ARTv2 for Maya so that I can add animations into Unreal more easily. However, I keep running into the following error code when I try to run the install.mel file:

line 54: IOError: file line 1: 22

I’ve tried installing on both Maya 2020 and 2018, but the error still occurs. Does anyone have experience with this and know a fix? If not, how difficult is it to learn to create character animations for Unreal without ARTv2?