Done that.
Also reinstalled Roon - no help
Also uninstalled Roon, removed Libraries for Roon and Roonserver, and reinstalled Roon - all no help.
Even with fresh install, option to run server locally fails with the same error
Which then would point to a hardware related issue when even a new empty database can’t be read without errors. You may wait until later when official support staff is picking up your case but In my opinion you should start looking at your hardware (RAM, disk). Try to run test software to determine its status.
Thanks for reaching out! I have gone ahead and activated diagnostics for your account and what this does is upload a set of logs for review to our servers. I am not seeing any signs of corruption in these logs, have you been able to resolve the issue after reaching out to us? Please let us know when possible, thanks!