{"id":1096893,"date":"2016-04-01T06:45:53","date_gmt":"2016-04-01T13:45:53","guid":{"rendered":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/"},"modified":"2016-04-04T07:52:07","modified_gmt":"2016-04-04T14:52:07","slug":"headers-already-sent-when-exporting-attendees","status":"closed","type":"topic","link":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/","title":{"rendered":"Headers Already Sent When Exporting Attendees"},"content":{"rendered":"

Hi,
\nI’m trying to export the attendees list:
\nLogin > Events > Event Name > Attendees > Export<\/p>\n

When I do this, I get the following error:<\/p>\n

\nWarning: array_flip(): Can only flip STRING and INTEGER values! in \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php on line 251<\/p>\n

Warning: Cannot modify header information – headers already sent by (output started at \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php:251) in \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php on line 317<\/p>\n

Warning: Cannot modify header information – headers already sent by (output started at \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php:251) in \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php on line 318\n<\/p><\/blockquote>\n

As such, it doesn’t create the file. <\/p>\n

I also get an error if I try to Email the list:<\/p>\n

\nWarning: array_flip(): Can only flip STRING and INTEGER values! in \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php on line 251\n<\/p><\/blockquote>\n

I’ve created 3 fields for the attendee info:
\n– Name
\n– Email Address
\n– Telephone<\/p>\n

Is it possible one of those fields is causing the issue?<\/p>\n

Any help would be appreciated.
\nThanks<\/p>\n","protected":false},"template":"","class_list":["post-1096893","topic","type-topic","status-closed","hentry"],"yoast_head":"\nHeaders Already Sent When Exporting Attendees -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Headers Already Sent When Exporting Attendees -\" \/>\n<meta property=\"og:description\" content=\"Hi, I’m trying to export the attendees list: Login > Events > Event Name > Attendees > Export When I do this, I get the following error: Warning: array_flip(): Can only flip STRING and INTEGER values! in \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php on line 251 Warning: Cannot modify header information – headers already sent by (output started at \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php:251) […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/\" \/>\n<meta property=\"article:modified_time\" content=\"2016-04-04T14:52:07+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/\",\"url\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/\",\"name\":\"Headers Already Sent When Exporting Attendees -\",\"isPartOf\":{\"@id\":\"https:\/\/theeventscalendar.com\/support\/#website\"},\"datePublished\":\"2016-04-01T13:45:53+00:00\",\"dateModified\":\"2016-04-04T14:52:07+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/theeventscalendar.com\/support\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\/\/theeventscalendar.com\/support\/topics\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Ticket Products\",\"item\":\"https:\/\/theeventscalendar.com\/support\/forums\/forum\/event-tickets\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Event Tickets Plus\",\"item\":\"https:\/\/theeventscalendar.com\/support\/forums\/forum\/event-tickets\/event-tickets-plus\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"Headers Already Sent When Exporting Attendees\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/theeventscalendar.com\/support\/#website\",\"url\":\"https:\/\/theeventscalendar.com\/support\/\",\"name\":\"\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/theeventscalendar.com\/support\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Headers Already Sent When Exporting Attendees -","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/","og_locale":"en_US","og_type":"article","og_title":"Headers Already Sent When Exporting Attendees -","og_description":"Hi, I’m trying to export the attendees list: Login > Events > Event Name > Attendees > Export When I do this, I get the following error: Warning: array_flip(): Can only flip STRING and INTEGER values! in \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php on line 251 Warning: Cannot modify header information – headers already sent by (output started at \/var\/sites\/h\/domain.com\/public_html\/wp-content\/plugins\/event-tickets\/src\/Tribe\/Tickets_Handler.php:251) […]","og_url":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/","article_modified_time":"2016-04-04T14:52:07+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/","url":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/","name":"Headers Already Sent When Exporting Attendees -","isPartOf":{"@id":"https:\/\/theeventscalendar.com\/support\/#website"},"datePublished":"2016-04-01T13:45:53+00:00","dateModified":"2016-04-04T14:52:07+00:00","breadcrumb":{"@id":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/theeventscalendar.com\/support\/forums\/topic\/headers-already-sent-when-exporting-attendees\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/theeventscalendar.com\/support\/"},{"@type":"ListItem","position":2,"name":"Topics","item":"https:\/\/theeventscalendar.com\/support\/topics\/"},{"@type":"ListItem","position":3,"name":"Ticket Products","item":"https:\/\/theeventscalendar.com\/support\/forums\/forum\/event-tickets\/"},{"@type":"ListItem","position":4,"name":"Event Tickets Plus","item":"https:\/\/theeventscalendar.com\/support\/forums\/forum\/event-tickets\/event-tickets-plus\/"},{"@type":"ListItem","position":5,"name":"Headers Already Sent When Exporting Attendees"}]},{"@type":"WebSite","@id":"https:\/\/theeventscalendar.com\/support\/#website","url":"https:\/\/theeventscalendar.com\/support\/","name":"","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/theeventscalendar.com\/support\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/theeventscalendar.com\/support\/wp-json\/wp\/v2\/topic\/1096893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/theeventscalendar.com\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/theeventscalendar.com\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":2,"href":"https:\/\/theeventscalendar.com\/support\/wp-json\/wp\/v2\/topic\/1096893\/revisions"}],"predecessor-version":[{"id":1097871,"href":"https:\/\/theeventscalendar.com\/support\/wp-json\/wp\/v2\/topic\/1096893\/revisions\/1097871"}],"wp:attachment":[{"href":"https:\/\/theeventscalendar.com\/support\/wp-json\/wp\/v2\/media?parent=1096893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}