Fatal error

Hi,

The plugin is causing a fatal error for my Presto Player.

Fatal error: Uncaught Error: Call to undefined function wp_get_current_user() in /var/www/local/htdocs/wp-includes/capabilities.php:693 Stack trace: #0 /var/www/local/htdocs/wp-content/plugins/masterstudy-lms-learning-management-system/lms/classes/instructors.php(276): current_user_can() #1 /var/www/local/htdocs/wp-includes/class-wp-hook.php(307): STM_LMS_Instructor::posts_for_current_author() #2 /var/www/local/htdocs/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters() #3 /var/www/local/htdocs/wp-includes/plugin.php(524): WP_Hook->do_action() #4 /var/www/local/htdocs/wp-includes/class-wp-query.php(1805): do_action_ref_array() #5 /var/www/local/htdocs/wp-includes/class-wp-query.php(3586): WP_Query->get_posts() #6 /var/www/local/htdocs/wp-includes/post.php(2410): WP_Query->query() #7 /var/www/local/htdocs/wp-content/plugins/presto-player/inc/Database/Upgrades/VisitsUpgrade.php(37): get_posts() #8 /var/www/local/htdocs/wp-content/plugins/presto-pl in /var/www/local/htdocs/wp-includes/capabilities.php on line 693

Can you advise please?

Regards

Max