Fatal error: Uncaught Error: Call to undefined function create_function() in /home/.sites/4/site8321839/web/wp-content/plugins/advanced-booking-calendar/widget.php:65
Stack trace:
#0 /home/.sites/4/site8321839/web/wp-content/plugins/advanced-booking-calendar/advanced-booking-calendar.php(14): include()
#1 /home/.sites/4/site8321839/web/wp-settings.php(305): include_once('/home/.sites/4/...')
#2 /home/.sites/4/site8321839/web/wp-config.php(115): require_once('/home/.sites/4/...')
#3 /home/.sites/4/site8321839/web/wp-load.php(37): require_once('/home/.sites/4/...')
#4 /home/.sites/4/site8321839/web/wp-blog-header.php(13): require_once('/home/.sites/4/...')
#5 /home/.sites/4/site8321839/web/index.php(17): require('/home/.sites/4/...')
#6 {main}
  thrown in /home/.sites/4/site8321839/web/wp-content/plugins/advanced-booking-calendar/widget.php on line 65