Backups to PBS failing after VM disk size increase

INFO: 28% (430.9 GiB of 1.5 TiB) in 14m 14s, read: 479.8 MiB/s, write: 890.4 KiB/s
ERROR: job failed with err -61 - No data available
INFO: aborting backup job
ERROR: Backup of VM 101 failed - job failed with err -61 - No data available

It stops here and errors out. Proxmox 6.3-6 with Pbs 1.0-1

Any ideas?