{"id":1443895,"date":"2018-02-05T00:17:42","date_gmt":"2018-02-05T08:17:42","guid":{"rendered":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/cannot-export-mail-attendees\/"},"modified":"2018-02-05T00:17:42","modified_gmt":"2018-02-05T08:17:42","slug":"cannot-export-mail-attendees","status":"closed","type":"topic","link":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/cannot-export-mail-attendees\/","title":{"rendered":"Cannot export \/ mail attendees"},"content":{"rendered":"<p>When i try to export or mail the list of attendees I get this error message:<br \/>\nWarning: call_user_func_array() expects parameter 1 to be a valid callback, class &#8216;tribe_events_page_tickets-attendees&#8217; not found in \/var\/www\/lyle.dk\/public_html\/wp-includes\/class-wp-hook.php on line 298<\/p>\n<p>Warning: array_map() [function.array-map]: Argument #2 should be an array in \/var\/www\/lyle.dk\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Attendees.php on line 469<\/p>\n<p>Warning: array_diff_key() [function.array-diff-key]: Argument #1 is not an array in \/var\/www\/lyle.dk\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Attendees.php on line 482<\/p>\n<p>Warning: Cannot modify header information &#8211; 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