the log of the issue
INFO: starting new backup job: vzdump 108 --storage OSF-Backup --notification-mode auto --notes-template '{{guestname}}' --node asus --remove 0 --mode snapshot
INFO: Starting Backup of VM 108 (lxc)
INFO: Backup started at 2025-03-23 18:52:02
INFO: status = running
INFO: CT Name: Laravel-OLS
INFO: including mount point rootfs ('/') in backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: create storage snapshot 'vzdump'
INFO: creating Proxmox Backup Server archive 'ct/108/2025-03-23T15:52:02Z'
INFO: set max number of entries in memory for file-based backups to 1048576
INFO: run: lxc-usernsexec -m u:0:100000:65536 -m g:0:100000:65536 -- /usr/bin/proxmox-backup-client backup --crypt-mode=none pct.conf:/var/tmp/vzdumptmp2255425_108/etc/vzdump/pct.conf root.pxar:/mnt/vzsnap0 --include-dev /mnt/vzsnap0/./ --skip-lost-and-found --exclude=/tmp/?* --exclude=/var/tmp/?* --exclude=/var/run/?*.pid --backup-type ct --backup-id 108 --backup-time 1742745122 --entries-max 1048576 --repository root@pam@XX:XX
INFO: Starting backup: ct/108/2025-03-23T15:52:02Z
INFO: Client name: asus
INFO: Starting backup protocol: Sun Mar 23 18:52:03 2025
INFO: Downloading previous manifest (Fri Aug 16 06:00:01 2024)
INFO: Upload config file '/var/tmp/vzdumptmp2255425_108/etc/vzdump/pct.conf' to 'root@pam@XX:8007:capsula' as pct.conf.blob
INFO: Upload directory '/mnt/vzsnap0' to 'root@
pam@XX.XX.XX.XX:8007:XX' as root.pxar.didx
INFO: processed 2.2 GiB in 1m, uploaded 1.075 GiB
INFO: processed 4.879 GiB in 2m, uploaded 2.086 GiB
INFO: processed 6.806 GiB in 3m, uploaded 3.419 GiB
INFO: processed 8.08 GiB in 4m, uploaded 4.592 GiB
INFO: processed 9.24 GiB in 5m, uploaded 5.756 GiB
INFO: processed 10.389 GiB in 6m, uploaded 6.914 GiB
INFO: processed 11.592 GiB in 7m, uploaded 8.084 GiB
INFO: processed 12.746 GiB in 8m, uploaded 9.2 GiB
INFO: processed 13.931 GiB in 9m, uploaded 10.389 GiB
INFO: processed 15.063 GiB in 10m, uploaded 11.569 GiB
INFO: processed 16.283 GiB in 11m, uploaded 12.769 GiB
INFO: processed 17.423 GiB in 12m, uploaded 13.983 GiB
INFO: processed 18.575 GiB in 13m, uploaded 15.145 GiB
INFO: processed 19.779 GiB in 14m, uploaded 16.225 GiB
INFO: processed 20.922 GiB in 15m, uploaded 17.496 GiB
INFO: processed 22.121 GiB in 16m, uploaded 18.592 GiB
INFO: processed 23.266 GiB in 17m, uploaded 19.853 GiB
INFO: processed 24.512 GiB in 18m, uploaded 20.941 GiB
INFO: processed 25.615 GiB in 19m, uploaded 22.153 GiB
INFO: processed 26.848 GiB in 20m, uploaded 23.317 GiB
INFO: processed 27.972 GiB in 21m, uploaded 24.509 GiB
INFO: processed 31.914 GiB in 22m, uploaded 27.888 GiB
INFO: processed 39.46 GiB in 23m, uploaded 35.566 GiB
INFO: processed 47.047 GiB in 24m, uploaded 43.046 GiB
INFO: processed 54.644 GiB in 25m, uploaded 50.433 GiB
INFO: processed 62.182 GiB in 26m, uploaded 57.834 GiB
INFO: processed 69.786 GiB in 27m, uploaded 65.253 GiB
INFO: processed 71.851 GiB in 28m, uploaded 67.551 GiB
INFO: processed 72.379 GiB in 29m, uploaded 68.071 GiB
INFO: processed 72.875 GiB in 30m, uploaded 68.577 GiB
INFO: processed 73.13 GiB in 31m, uploaded 68.831 GiB
INFO: processed 73.335 GiB in 32m, uploaded 69.027 GiB
INFO: processed 73.533 GiB in 33m, uploaded 69.239 GiB
INFO: processed 74.823 GiB in 34m, uploaded 69.563 GiB
INFO: processed 75.588 GiB in 35m, uploaded 70.949 GiB