RobAdams

That is a very general response. Looked to me that one of the core functions that was being called from this plugin was corrupt or missing. Upon investigating it I discovered that the wp_load file was missing. So now I have the file back and minus the above php error, it still breaks.

Looking through the PHP errors, even today looks like there may be some remnants.

[30-Sep-2019 13:35:50 UTC] PHP Fatal error: Uncaught Error: Call to undefined function wp_hash() in /home/XXXXXXXXXXXX/public_html/wp-content/plugins/autoptimize/classes/autoptimizeMain.php:129

Which refers to this line in that file:
if ( ! defined( ‘AUTOPTIMIZE_HASH’ ) ) {
define( ‘AUTOPTIMIZE_HASH’, wp_hash( AUTOPTIMIZE_CACHE_URL ) );
}

Hello. Some quick responses:

* does this break your front-end or your wp-admin?
yes, both
* check the PHP errorlog for relevant errors
nothing noted
* make sure you have no “competing” plugins active, meaning make sure not to have plugins that also do JS/ CSS/ HTML optimization
All other optimization plugins deactivated/removed
* could be a plugin conflict, try enabling AO when all other plugins are deactivated?
The plugin WP Preloader seemed to break when enable. Site is online now with plugin activated, but I would not think that the above mentioned plugin should break it.

• This reply was modified 5 years, 2 months ago by RobAdams.