/wp-admin page does not work

I have solved my problem. That was beacuse of breadcrumb-navigation-xt file. I have loaded the old version, everything recovered.

You can set it resolved over there —->

??

I’m unable to login to my wp-admin page as well, however, these steps do not resolve my issue … I goofed somewhere. I keep getting this message:

Error 500 – Internal server error

An internal server error has occured!
Please try again later.

It happened all of a sudden when I updated the URL in my User Profile from https://www.msbunn.com to https://www.msbunn.com/archives-all. Help!