Thanks for the logs.
I am not seeing ANY errors.
When this happens, it usually ends up being a damaged database.
How good are you at using SSH (command line) ?
I ask because there is a tool to help check the database, fix it, or replace it with a known-good backup (something from before this started happening).
If you look here
Look at the documentation (the README.md)
It will show how to install and run it on Synology.
If you have ANY questions, please ask.
