Sorry, i saved this thread to answer later and it got kinda lost.
First of all, if you really need your files, we have a tool called Sanitizer, with wich you can decrypt all your files: Sanitizer: How to Use
Settling this, are you still using Cryptomator? The current version is 1.4.10 where we had a lot of changes under the surface and maybe just using this version your problem is fixed.
Regarding your log, don’t you see anything in your unlocked vault? Because in the log there is a .xls file, so at least this should be shown.