When I try to create an event that recurs on the second Monday of every month, I get this:
Warning: sort() expects parameter 1 to be array, null given in /home/content/71/7887271/html/hermannuccnew/wp-content/plugins/events-calendar-pro/lib/tribe-date-series-rules.class.php on line 100
Warning: Cannot modify header information – headers already sent by (output started at /home/content/71/7887271/html/hermannuccnew/wp-content/plugins/events-calendar-pro/lib/tribe-date-series-rules.class.php:100) in /home/content/71/7887271/html/hermannuccnew/wp-includes/pluggable.php on line 934