Problem installing SImpleMathJax?

https://www.mediawiki.org/wiki/Extension:SimpleMathJax#Configuration_settings

Followed Instructions:

Download and place the file(s) in a directory called SimpleMathJax in your extensions/ folder.

Add the following code at the bottom of your LocalSettings.php: wfLoadExtension( ‘SimpleMathJax’ ); [Adding this text breaks the mediawiki so only a white screen shows.]

Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.