WP SyntaxHighlighter Not Working

https://www.darryncooke.com/theblindside/how-to-add-captcha-to-any-form-with-ease/

The link above will take you to the post. I have tried every single SyntaxHighlighter and none of them work. I deactivated plugins and tried them alone and still nothing.

I was having an issue with the dashboard and I had to add this line

define( ‘CONCATENATE_SCRIPTS’, false );

to the top of my wp-config file. Other than that I don’t know what else to do. any help would be great.