And deactivating the few plugins I use did not help.Īny idea what’s happening and how I can fix it? I’m using WordPress 5.8.1 running Twenty Twenty-One theme. Warning: Cannot modify header information – headers already sent by (output started at /home2/zachever/public_html/wp-config.php:44) in /home2/zachever/public_html/wp-includes/option.php on line 1098` Warning: Cannot modify header information – headers already sent by (output started at /home2/zachever/public_html/wp-config.php:44) in /home2/zachever/public_html/wp-includes/option.php on line 1097 Warning: Cannot modify header information – headers already sent by (output started at /home2/zachever/public_html/wp-config.php:44) in /home2/zachever/public_html/wp-admin/admin-header.php on line 9 Warning: Cannot modify header information – headers already sent by (output started at /home2/zachever/public_html/wp-config.php:44) in /home2/zachever/public_html/wp-admin/includes/misc.php on line 1310 `Warning: Cannot modify header information – headers already sent by (output started at /home2/zachever/public_html/wp-config.php:44) in /home2/zachever/public_html/wp-includes/functions.php on line 6712 Notice: ob_end_flush(): failed to send buffer of zlib output compression (0) in /home2/zachever/public_html/wp-includes/functions.php on line 5107Īnd, while I’m not sure if they’re related, these error messages now appear in the header of my WP dashboard This section defines an interface that allows in-memory compression using the deflate interface provided by zlib. An error message recently started appearing on every page of my website: The Compress::Raw::Zlib module provides a Perl interface to the zlib compression library (see 'AUTHOR' for details about where to get zlib).