I need to prevent Filevault from stopping my system from booting
Apple FileVault is a disk encryption feature. Please ensure that Filevault is not enabled on your Mac mini M1. If enabled, it will prevent your system from booting.
To turn off Filevault, go to System Preferences click on Security, then FileVault, then click the button that says turn off FileVault.
If FileVault is enabled and your Mac mini reboots for whatever reason, it will ask for the FileVault password during the boot process, before you can access the machine using VNC or SSH. You will not be able to restart it or to recover your data if FileVault is enabled!