When I disconnect external drive that I installed the cubase builtin plugins, Cubase crashes when opening

When I disconnect external drive that I installed the cubase builtin plugins, Cubase crashes when opening.
It loads up for couple seconds, and It crashes when the Steinberg logo loading page is happening.

Using on Mac OS Catalina and Cubase Pro 10.5.00
MacBook Pro 16 inch

Thanks!

I removed my car’s battery & now it won’t start. ¯_(ツ)_/¯

Consider putting the plugs somewhere that Cubase can always find them