On the latest version (1.8.1), the game crashes when I try changing the configin-game.
I have attached the crash log.
crash-2020-08-22_19.40.05-client.txt

Sure thing!
(You do great work btw)

Down-grading grid worked.
The config screen looks a bit weird (no scroll bar to get to the options below the screen)- but it does not crash anymore.

This is most probably because several of my mods (in your case, beenfo, durabilityviewer, and grid), share the same library, and grid is already updated to 1.16.2-pre1, so durabilityviewer uses that version of the config screen, which won't work with 1.16.1.
Can you try replacing Grid with the 1.16.1 version at https://www.curseforge.com/minecraft/mc-mods/grid/files/3038548, then check if it works?