By sundern on

I recently installed Menuistic 8.x-1.0 (default theme, administration theme) theme.. immediately, I can't login as Administrator..

This happens a lot with trying out new themes.. big pain but there is easy solution to restore your default theme. Here are the steps:

On your sites home directory:
/drupal or /home of drupal site

# drush status

drush config-set system.theme default bartik
Do you want to update default key in system.theme config? (y/n): y

⋅ Categories: Drupal 8.x