{"id":2909398,"date":"2012-07-20T22:06:24","date_gmt":"2012-07-20T22:06:24","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/plugin-polylang-error-output-before-and-headers-already-sent-error\/"},"modified":"2016-08-20T13:56:18","modified_gmt":"2016-08-20T13:56:18","slug":"plugin-polylang-error-output-before-and-headers-already-sent-error","status":"closed","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/plugin-polylang-error-output-before-and-headers-already-sent-error\/","title":{"rendered":"[Plugin: Polylang] Error output before  and &quot;Headers already sent&quot; error"},"content":{"rendered":"<p>The following error is displayed prior to html output on the page after activating the plugin:<\/p>\n<p><strong>Warning:<\/strong> in_array() expects parameter 2 to be array, null given in <strong>\/path\/to\/wordpress\/wp-content\/plugins\/polylang\/include\/core.php<\/strong> on <strong>line 330<\/strong><\/p>\n<p>Also, when unchecking &#8220;Hide URL language information for default language&#8221; in the language settings, the error also includes:<\/p>\n<p><strong>Warning:<\/strong> Cannot modify header information &#8211; headers already sent by (output started at <strong>\/path\/to\/wordpress\/wp-content\/plugins\/polylang\/include\/core.php:330<\/strong>) in <strong>\/path\/to\/wordpress\/wp-includes\/pluggable.php<\/strong> on <strong>line 881<\/strong><\/p>\n<p>And, obviously, no html is output at all.<\/p>\n<p>https:\/\/wordpress.org\/extend\/plugins\/polylang\/<\/p>\n","protected":false},"template":"","class_list":["post-2909398","topic","type-topic","status-closed","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/2909398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/2909398\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=2909398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}