Minecraft Launcher Whoops! Unexpected error, even though I've restarted and re-installed a million times

I keep trying to open my Minecraft Launcher but it always gives me the Whoops! unexpected error sign. I’ve tried uninstalling all of the Minecraft files on my Linux Mint laptop, and reinstalled the .deb package again, and then it worked! Yesterday the whole evening Minecraft Launcher was working perfectly fine again. But now, this morning I opened ML again, and it’s giving me the same error again. I don’t want to keep uninstalling and re-installing to play Minecraft anymore, especially since it was a temporary fix. Please help me fix this permanently.

Just a few weeks ago I played this game perfectly fine without any errors whatsoever. Only thing I could think of is that I recently started playing again a CurseForge modpack, and after that the ML was starting to tweak out. But I can’t think of how that could be the root of the issue.