My apps actually require about 480 GB of storage. Two days ago, I received a notification that I was running out of space. I checked Cloudron and saw that 800 GB was already in use; a day later, that figure had risen to 1 TB.

Cloudron has also been reporting repeated backup failures for the past week.
However, I have no idea why this is happening.

Where should I start looking?

The /var/backups directory contains several files. Shouldn't that directory be empty if I'm using a separate hard drive specifically for backups?

root@cloudron:/var/backups# dir
alternatives.tar.0        apt.extended_states.2.gz  dpkg.arch.5.gz        dpkg.statoverride.0     dpkg.status.2.gz
alternatives.tar.1.gz     apt.extended_states.3.gz  dpkg.arch.6.gz        dpkg.statoverride.1.gz  dpkg.status.3.gz
alternatives.tar.2.gz     apt.extended_states.4.gz  dpkg.diversions.0     dpkg.statoverride.2.gz  dpkg.status.4.gz
alternatives.tar.3.gz     apt.extended_states.5.gz  dpkg.diversions.1.gz  dpkg.statoverride.3.gz  dpkg.status.5.gz
alternatives.tar.4.gz     dpkg.arch.0               dpkg.diversions.2.gz  dpkg.statoverride.4.gz  dpkg.status.6.gz
alternatives.tar.5.gz     dpkg.arch.1.gz            dpkg.diversions.3.gz  dpkg.statoverride.5.gz  snapshot
alternatives.tar.6.gz     dpkg.arch.2.gz            dpkg.diversions.4.gz  dpkg.statoverride.6.gz
apt.extended_states.0     dpkg.arch.3.gz            dpkg.diversions.5.gz  dpkg.status.0
apt.extended_states.1.gz  dpkg.arch.4.gz            dpkg.diversions.6.gz  dpkg.status.1.gz

please help me