Ubuntu 24.04 + Nextcloud Snap + LXC Container = Mysterious Space Consumption

root@nextcloud:/# du -sh .[^.]*; du -sh *
du: cannot access '.[^.]*': No such file or directory
512     bin
512     bin.usr-is-merged
512     boot
du: cannot read directory 'dev/.lxc/sys/kernel': Permission denied
du: cannot read directory 'dev/.lxc/sys/power': Permission denied
du: cannot read directory 'dev/.lxc/sys/class': Permission denied
du: cannot read directory 'dev/.lxc/sys/devices': Permission denied
du: cannot read directory 'dev/.lxc/sys/dev': Permission denied
du: cannot read directory 'dev/.lxc/sys/hypervisor': Permission denied
du: cannot read directory 'dev/.lxc/sys/fs': Permission denied
du: cannot read directory 'dev/.lxc/sys/bus': Permission denied
du: cannot read directory 'dev/.lxc/sys/firmware': Permission denied
du: cannot read directory 'dev/.lxc/sys/block': Permission denied
du: cannot read directory 'dev/.lxc/sys/module': Permission denied
du: cannot read directory 'dev/.lxc/proc/fs': Permission denied
du: cannot read directory 'dev/.lxc/proc/bus': Permission denied
du: cannot read directory 'dev/.lxc/proc/irq': Permission denied
du: cannot read directory 'dev/.lxc/proc/spl': Permission denied
du: cannot read directory 'dev/.lxc/proc/sys': Permission denied
du: cannot read directory 'dev/.lxc/proc/tty': Permission denied
du: cannot read directory 'dev/.lxc/proc/acpi': Permission denied
du: cannot read directory 'dev/.lxc/proc/scsi': Permission denied
du: cannot read directory 'dev/.lxc/proc/asound': Permission denied
du: cannot read directory 'dev/.lxc/proc/driver': Permission denied
du: cannot read directory 'dev/.lxc/proc/sysvipc': Permission denied
du: cannot read directory 'dev/.lxc/proc/pressure': Permission denied
du: cannot read directory 'dev/.lxc/proc/dynamic_debug': Permission denied
du: cannot read directory 'dev/.lxc/proc/1': Permission denied
du: cannot read directory 'dev/.lxc/proc/47': Permission denied
du: cannot read directory 'dev/.lxc/proc/124': Permission denied
du: cannot read directory 'dev/.lxc/proc/127': Permission denied
du: cannot read directory 'dev/.lxc/proc/131': Permission denied
du: cannot read directory 'dev/.lxc/proc/144': Permission denied
du: cannot read directory 'dev/.lxc/proc/213': Permission denied
du: cannot read directory 'dev/.lxc/proc/315': Permission denied
du: cannot read directory 'dev/.lxc/proc/316': Permission denied
du: cannot read directory 'dev/.lxc/proc/319': Permission denied
du: cannot read directory 'dev/.lxc/proc/336': Permission denied
du: cannot read directory 'dev/.lxc/proc/343': Permission denied
du: cannot read directory 'dev/.lxc/proc/344': Permission denied
du: cannot read directory 'dev/.lxc/proc/345': Permission denied
du: cannot read directory 'dev/.lxc/proc/346': Permission denied
du: cannot read directory 'dev/.lxc/proc/350': Permission denied
du: cannot read directory 'dev/.lxc/proc/672': Permission denied
du: cannot read directory 'dev/.lxc/proc/674': Permission denied
du: cannot read directory 'dev/.lxc/proc/3966': Permission denied
du: cannot read directory 'dev/.lxc/proc/714973': Permission denied
du: cannot read directory 'dev/.lxc/proc/715601': Permission denied
du: cannot read directory 'dev/.lxc/proc/715607': Permission denied
du: cannot read directory 'dev/.lxc/proc/715614': Permission denied
du: cannot read directory 'dev/.lxc/proc/715627': Permission denied
du: cannot read directory 'dev/.lxc/proc/715652': Permission denied
du: cannot read directory 'dev/.lxc/proc/715787': Permission denied
du: cannot read directory 'dev/.lxc/proc/716168': Permission denied
du: cannot read directory 'dev/.lxc/proc/716395': Permission denied
du: cannot read directory 'dev/.lxc/proc/716784': Permission denied
du: cannot read directory 'dev/.lxc/proc/899785': Permission denied
du: cannot read directory 'dev/.lxc/proc/899827': Permission denied
du: cannot read directory 'dev/.lxc/proc/1636636': Permission denied
du: cannot read directory 'dev/.lxc/proc/1655800': Permission denied
du: cannot read directory 'dev/.lxc/proc/1656349': Permission denied
du: cannot read directory 'dev/.lxc/proc/1656404': Permission denied
du: cannot read directory 'dev/.lxc/proc/2355456': Permission denied
du: cannot read directory 'dev/.lxc/proc/2355457': Permission denied
du: cannot read directory 'dev/.lxc/proc/2355458': Permission denied
du: cannot read directory 'dev/.lxc/proc/2355846': Permission denied
du: cannot read directory 'dev/.lxc/proc/2966592': Permission denied
du: cannot read directory 'dev/.lxc/proc/2983907': Permission denied
du: cannot read directory 'dev/.lxc/proc/2984802': Permission denied
du: cannot read directory 'dev/.lxc/proc/2985165': Permission denied
du: cannot read directory 'dev/.lxc/proc/2985167': Permission denied
4.0K    dev
3.7M    etc
512     home
512     lib
512     lib.usr-is-merged
512     lib32
512     lib64
512     libx32
185G    media
512     mnt
512     opt
du: cannot read directory 'proc/tty/driver': Permission denied
du: cannot access 'proc/2985167/task/2985167/fd/4': No such file or directory
du: cannot access 'proc/2985167/task/2985167/fdinfo/4': No such file or directory
du: cannot access 'proc/2985167/fd/3': No such file or directory
du: cannot access 'proc/2985167/fdinfo/3': No such file or directory
0       proc
60K     root
132K    run
512     sbin
512     sbin.usr-is-merged
3.0G    snap
512     srv
193K    tmp
320M    usr
1.9G    var

It shows /media taking up 185GB but the folders inside of /media point to two NFS shares on another server. One of them is a target for backing up my data using snap.nextcloud export but I can’t get it to drop the data on the NFS share.