Fatal error: Uncaught Error: Call to undefined function add_action() in /home/.sites/133/site516/web/WP/wp-content/plugins/the-events-calendar/src/io/csv/ecp-events-importer.php:13
Stack trace:
#0 {main}
  thrown in /home/.sites/133/site516/web/WP/wp-content/plugins/the-events-calendar/src/io/csv/ecp-events-importer.php on line 13