The latest update broke something...

According to the .lua your missing the addon file itself..

installing the missing .lua removes the error

What lua was missing? I'm showing the same thing you posted.

The file shows the same: https://github.com/cr4ckp0t/AdiBags_ZerethMortis/blob/main/AdiBags_ZerethMortis.toc

https://github.com/cr4ckp0t/AdiBags_ZerethMortis/blob/main/ZerethMortis.lua

I'm afraid I don't follow what you're saying, so I'm just going to close this.