I bought Minecraft a very short time ago (A few days ago) and it is impossible for me to play in the java version by clicking on the PLAY button the launcher asks me to put a username so I put a valid username except that it puts me oops an error has occurred when I want to save this username if I put an invalid username it will tell me that it is not valid or that it is already taken It therefore puts impossible to play on Minecraft Java on the other hand I can play on Minecraft BEDROCK.

I tried uninstalling and reinstalling the launcher but that didn't fix the problem.

And also try to play in another version (because I had only tried the latest version) but that didn't solve my problem.