I am a new guy try to install mediawiki. and want to install - wysiwyg editor (Wiki Editor) but fail.
I follow the commad as link -
Add the following code at the bottom of your LocalSettings.php:
wfLoadExtension( 'WikiEditor' );
But after that , I can't access the mediawiki. and show the page does not exist.
If I delete the "wfLoadExtension...." , mediawiki works again.
and I sure select the right version for WikiEditor.
2019/05/07 update the error screen as below