MacOS Catalina Error -43

As a workaround you can try to use FUSE.

Regarding the error, i found three other posts mentioning this error:
The first one was solved by updating Cryptomator (i don’t know which version you are using)

The second one was solved, by removing Spaces inbetween the vault name:

The third is still unanswered: Can not delete files inside Vault - error code -43