Tested with MediaWiki 1.38.2 with PHP 8.1.9 and it works fine.
Extension talk:Header/Flow
Appearance
Can I just create the file "header.php"?
I did that but I am just getting:
Warning: Cannot modify header information - headers already sent by (output started at .../wiki/extensions/Header/Header.php:6) in .../wiki/includes/WebResponse.php on line 37
I read that this means there is a problem with "header.php".
I created the file with Notepad++, not with Windows Notepad to have the right "coding"
and
there is nothing (even not whitespace) before the <?php tag
Can anyone help here? Thanks.
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