Pep

I’ve got the same error.
The Apache error log returns:

PHP Fatal error:  Class 'Hyyan\\WPI\\Reports' not found in /wp-content/plugins/woo-poly-integration/src/Hyyan/WPI/Plugin.php on line 100

I found out that the Plugin.php tries to register the Reports function which doesn’t exist.

On line 100 in Plugin.php is says: new Reports();

I commented line 100 and everything is working again.

Maybe this helps.

Thanks!