How to fix an errored Snapshot?

Hey guys I have an errored snapshot but the later ones are fine. I already tried kopia snapshot delete ID
but then I get the following error message:

kopia snapshot delete kcc9c434803c7fb700674fb9e6738f789
Would delete snapshot 0a17f369caf1dd1d1be70e2eb6afc523 of xxx@xxx:/PATH/ at 2023-06-07 12:00:07 CEST (pass --delete to confirm)
Running full maintenance...
Looking for active contents...
Looking for unreferenced contents...
GC found 1032 unused contents (2.6 GB)
GC found 0 unused contents that are too recent to delete (0 B)
GC found 824293 in-use contents (2.4 TB)
GC found 3 in-use system-contents (3.9 KB)
Previous content rewrite has not been finalized yet, waiting until the next blob deletion.
Found safe time to drop indexes: 2023-06-17 14:02:08.603687416 +0200 CEST
Dropping contents deleted before 2023-06-17 14:02:08.603687416 +0200 CEST
Looking for unreferenced blobs...
Finished full maintenance.
ERROR error running maintenance: error running maintenance: error deleting unreferenced blobs: error looking for unreferenced blobs: error iterating blobs: error processing directory shards: error reading directory: unable to complete ReadDir:/PATH/p/212 despite 10 retries: readdirent /PATH/p/212: input/output error

Is it possible to fix the backup or do I need to recreate it entirely?
Thanks for your answers!