Fatal error: Uncaught Error: [] operator not supported for strings in /var/hpwsites/u_bouwkennis/website/html/webroot/wp-content/plugins/super-simple-events/public/class-super-simple-events.php:1535 Stack trace: #0 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/class-wp-hook.php(286): Super_Simple_Events->pre_get_posts(Object(WP_Query)) #1 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/plugin.php(515): WP_Hook->do_action(Array) #3 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/class-wp-query.php(1634): do_action_ref_array('pre_get_posts', Array) #4 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/class-wp-query.php(3230): WP_Query->get_posts() #5 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/class-wp.php(601): WP_Query->query(Array) #6 /var/hpwsites/u_bouwkennis/website/html/webroot/wp-includes/class-wp.php(717): WP->query_posts() #7 /var in /var/hpwsites/u_bouwkennis/website/html/webroot/wp-content/plugins/super-simple-events/public/class-super-simple-events.php on line 1535