When I try to make a new Basic Page, I get the error below:
Recoverable fatal error: Object of class Drupal\node\Entity\NodeType could not be converted to string in Drupal\Component\Utility\Html::getClass() (line 72 of core/lib/Drupal/Component/Utility/Html.php).
I am currently on 8.3.7, but I get the same error when upgrading to 8.4.2 as well. This happens for creating all content types. Has anyone else come across this? I am a little worried since it is a core issue, but I assume it is some kind of configuration issues. Any help is greatly appreciated.