Looks like you are missing a cache cleanup or the module is not installed properly or you have problems with dynamic links.
Either way, first try cleaning your application cache (admin > maintenance > application) as it is a part of the module installation, then for us to better understand what is going on, provide details about that "500 | Server Error".
Enable debugging to see it live as it happens or check you laravel logs when you see that generic page.
https://docs.phpvms.net/help
Good luck