Duplicates Not Allowed Error

New cryptic message:


Any idea what this means?

Running V2019.0

Do you use custom additional arguments for Chromium?

None at all.

Walked away from computer for little while and now new alert popped up while compiled exe running:


Never seen that one either.

I am at loss why all these issues started happening on both computers.

Restart the computers, maybe you have some memory corruption.

Most everyday my computers are shut down when leaving them unattended (like overnight). Do not like leaving them connected to net unless using:)