Why can't I open or make new projects in unity?

It happens that a few days ago I got an error that prevented me from opening a project of mine in unity, I decided to create a new one but I was surprised that it also had the same error, I attach a screenshot where the error is seen, when I press one of The two options do not solve the problem and the same window reappears with the same error in the screenshot, the only thing I have left is to press “quit”.168854-captura-de-pantalla-2020-10-07-120832.png

dude same thing here. but its only for 2d projects and 3d works for me. pls help,Dude the same thing is happening. but for me, i can open 3d projects, but 2d projects are doing this.