Looks like you created the export without syncing or shutting down the VM:
lxc start jammy-ibm-gt --console
...
Begin: Will now check root file system ... fsck from util-linux 2.37.2
[/usr/sbin/fsck.ext4 (1) -- /dev/sda1] fsck.ext4 -a -C0 /dev/sda1
cloudimg-rootfs: Superblock needs_recovery flag is clear, but journal has data.
cloudimg-rootfs: Run journal anyway
cloudimg-rootfs: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options)
fsck exited with status code 4
done.
Failure: File system check of the root filesystem failed
The root filesystem on /dev/sda1 requires a manual fsck
I’ll see if I can run an fsck on it