Now when I want to syndicate a new feed, it returns me to a page with the following error:
Warning: Cannot modify header information – headers already sent by (output started at /homepages/26/d181594161/htdocs/wp-admin/admin-header.php:16) in /homepages/26/d181594161/htdocs/wp-includes/functions.php on line 1219
And it asks me: “Are you sure you want to do this?
What is going on there? #1219 of functions.php looks as follows:
header(‘Content-Type: text/html; charset=utf-8’);
I mean I am no PHP noob. Output is sent before this line is executed. How can I find out where? Going through the entire source and search for echo?
Is this problem known? Is there another solution/quickfix to it?