I have a Google Slides file which is failing to sync (I think - it exists on disk as an MS Powerpoint file, but may not be the latest revision, it’s shared with multiple editors).
In the errors tab of Insync I get the message “Can’t process example.pptx - ‘NoneType’ object has no attribute ‘startswith’”
I can send the logs to a developer if they would be useful - I can’t immediately see how to read logs.db so I’ll leave it in your capable hands!