We have mirror database in our network and master database in another network. We are getting the error "svnsync: E020014: Failed to find label 'NULL' for URL '/svn/MyRepo/!svn/rev/37'" in between during sync the mirror via https protocol(Internet).
If I'm running the command again, it's start syncing the revisions. Again we are getting the same error after some time. Can anyone help to resolve this error ?