I can't play minecraft because i get an error.

I bought Minecraft, but only the bedrock edition works. When I try to enter a nickname, it says "Whoops!
An unexpected issue occurred; we are sorry for the inconvenience. Please try restarting your Launcher. If
that does not resolve the issue, please log a bug report HERE
Try again."The name of the error was by the way different. I tried restarting and reinstalling and it didn't work. I have been struggling with this problem for many months. Please help me.