Fatal error: Uncaught Error: Call to undefined function get_user_by() in /home4/ab8420/merishopping.pk/wp-content/plugins/aryo-activity-log/classes/class-aal-api.php:89 Stack trace: #0 /home4/ab8420/merishopping.pk/wp-content/plugins/aryo-activity-log/classes/class-aal-api.php(163): AAL_API->insert(Array) #1 /home4/ab8420/merishopping.pk/wp-content/plugins/aryo-activity-log/hooks/class-aal-hook-plugins.php(20): aal_insert_log(Array) #2 /home4/ab8420/merishopping.pk/wp-content/plugins/aryo-activity-log/hooks/class-aal-hook-plugins.php(26): AAL_Hook_Plugins->_add_log_plugin('deactivated', 'Rollback Update...') #3 /home4/ab8420/merishopping.pk/wp-includes/class-wp-hook.php(326): AAL_Hook_Plugins->hooks_deactivated_plugin('rollback-update...') #4 /home4/ab8420/merishopping.pk/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #5 /home4/ab8420/merishopping.pk/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home4/ab8420/merishopping.pk/wp-admin/includes/plugin.php(842): do_action('deactivated_plu.. in /home4/ab8420/merishopping.pk/wp-content/plugins/aryo-activity-log/classes/class-aal-api.php on line 89