I had the same problem on my Danish site. I recovered the site and deactivated the plugin.
If I try to reactivate the plugin, I get this error:
Error thrown
Failed opening required ‘/customers/f/4/1/tik.dk/httpd.www/loberne/wp-content/plugins/google-site-kit/includes/Core/Admin/Plugin_Row_Meta.php’ (include_path=’.:/usr/share/php’)