Can’t Upload Images – Gallery Not working at all!!!!

Can’t upload images.

If I try to upload from url I get the following message:

Address Not Found
Firefox can’t find the server at wp-admin.
The browser could not find the host server for the provided address.”

I think it’s trying to go to: https://wp-admin

and is forgetting to add my domain.com/wp-admin

Also cannot access the gallery. It does not even show up.

I am hosting my wordpress on a subdomain.mydomain.com