blender 2.90.1 export gltf on ubuntu 20.10 crashes I run from terminal for error message.
Read prefs: /home/u/.config/blender/2.90/config/userpref.blend
/run/user/1000/snap.blender/gvfs/ non-existent directory
found bundled python: /snap/blender/47/2.90/python
Aborted (core dumped)

I also tried from blender 2.83.8 and I get same crash.
I had similar problem.  Removing settings helps me.
rm ~/.config/blender/2.90
At first, you can rename it or move it to other folder and test running Blender.