sadly, that did not fix the 500 error

maybe something is missing in the personality.php and personalityview.php did you try to copy paste everything again? and check if the names match?
i just installed the mod in my site and everything works fine
Thank you Abronsyth for sharing with us the code

Now I just feel stupid. Turns out, I had added an extra character to the filename, which was causing the error. It is now working properly

Aaaah, okay! Don't feel stupid! I make some of the most ridiculous mistakes with files haha. Glad to hear it's working for you both :D