Unexpected error when opening my current catalog

Hello,

I face an "unexpected error" that can't open my 2018 catalog in LR classic CC, working perfectly up to today...

I just updated the app 10mn ago, but it still fails launching.

My computer is a MacBook Pro 2015 version - Intel i7 3,1 GHz

OS : macOS Mojave version 10.14

Thanks a lot if someone has an idea of what could I do to solve the problem, I'm super unhappy

Cheers,

Alexis