I am not sure if this is very bad. But I get the following when running a backup
* 0 hashing, 16 hashed (14.9 MB), 189801 cached (1.4 GB), uploaded 204 B, estimated 1.4 GB (100.0%) 0s left
Created snapshot with root k205683c739df425a7a6ae7b7ce49520b and ID 413f18cf37b9367947f11e1f31e474b5 in 28s
ERROR error during periodic sweep of metadata cache: error listing metadata cache: error processing directory shards: error reading directory: open /home/manfred/.cache/kopia/0d876e0bda8b088a/metadata: no such file or directory
ERROR error during periodic sweep of content cache: error listing content cache: error processing directory shards: error reading directory: open /home/manfred/.cache/kopia/0d876e0bda8b088a/contents: no such file or directory
ERROR error during periodic sweep of content cache: error listing content cache: error processing directory shards: error reading directory: open /home/manfred/.cache/kopia/0d876e0bda8b088a/contents: no such file or directory
...