I’m sorry, but LibGDX worked just fine the last time I used it. Its a you problem! The sooner you admit that, the sooner you’ll be on the path of better informing yourself and getting this solved.
Admit what? Did you even watch the video before posting? Did you read the Nb/Tomas reply on the subject? Did you read the whole topic before posting?
“LibGDX worked just fine the last time I used it.”
Oh boy.