Users experiencing crash loops or not properly displayed custom environments (black void)

Solution: Uninstall Custom environments via SideQuest:

Connect Quest via USB to SideQuest desktop app

Press the upper button currently installed apps

Enable 'show all' on the right

Enter 'envi' in the search

Press the gear wheel and uninstall the app

Reboot your Quest

Now reinstall the original environments in your Quest

Community Source: https://www.reddit.com/r/OculusQuest/comments/mbrvhy/shellenv_keeps_stopping_no_custom_environment/