with the Update to 6.8.0 we were no longer able to restore backups from our production CMS app. Unfortunately the logs did not really have any useful information and I couldn’t find anything here that resembled the issue, so I decided to take matters into my own hands and started debugging.
I found out, that with large backups, it happens quite often that the content restore ends up trying to emit 0 events in
MongoContentRepository_SnapshotStore which will throw an error in the current version of the mongoDB driver.
My assessment would be, that it’s generally a non-error if there is no content inserted and the exception that is thrown by the mongodb driver can just be avoided without other errors being swallowed by the fix.
I posted a pull request for my suggested fix on github: https://github.com/Squidex/squidex/pull/895
Have a nice day!