Email log error

NethServer Version: 7.7.1908
Module: mail

My logs report an error in mail. Should I worry, can I fix it?

imap(user@mydomain.tld: Error: /var/lib/nethserver/vmail/user@mydomain.tld/Maildir/public/dovecot.index.pvt reset, view is now inconsistent

You could try to move the dovecot.index.pvt file to an other folder. It should regenerate itself.
Have a look at the log again, if it still appears.

Unfortunately there are nor such *.pvt-Files only dovecot.index.pvt.log-Files

I deleted the …/user@mydomain.tld/Maildir/public/-Folders. But they are immediately recreated without pvt-files.