Fatal error: Uncaught exception 'Exception' with message 'DateTime::__construct(): Failed to parse time string (--) at position 0 (-): Unexpected character' in /home/thegrantjournal/public_html/wp-content/plugins/the-holiday-calendar/helpers/helper.class.php:156Stack trace:#0 /home/thegrantjournal/public_html/wp-content/plugins/the-holiday-calendar/helpers/helper.class.php(156): DateTime->__construct('--')#1 /home/thegrantjournal/public_html/wp-content/plugins/the-holiday-calendar/helpers/string-helper.class.php(19): thc_helper::formatDate('')#2 /home/thegrantjournal/public_html/wp-content/plugins/the-holiday-calendar/the-holiday-calendar.php(217): thc_string_helper::convert_dates_to_single_line('', '', '', '')#3 [internal function]: the_holiday_calendar::override_title('What are the Ma...', 1312)#4 /home/thegrantjournal/public_html/wp-includes/class-wp-hook.php(298): call_user_func_array(Array, Array)#5 /home/thegrantjournal/public_html/wp-includes/plugin.php(203): WP_Hook->apply_filters('What are the Ma...', Arra in /home/thegrantjournal/public_html/wp-content/plugins/the-holiday-calendar/helpers/helper.class.php on line 156