After installing
more specifically
http://demo.vegatheme.com/learn/events/ this theme started giving me such errors
Warning: get_class() expects parameter 1 to be object, null given in /home/customer/www/thenetwork.training/public_html/wp-content/plugins/sensei/includes/class-sensei.php on line 1031 and one more error
after I downgraded the PHP version of my hosting it solved but my wocommerce wont run flawlessly if I use downgraded PHP,
after I install the demo designs it seems like many things are missing from there i have installed all plugins all files.