Title: Unknown Error, help please. Last modified: August 18, 2016 --- # Unknown Error, help please. * Resolved [ingsiang](https://wordpress.org/support/users/ingsiang/) * (@ingsiang) * [18 years, 11 months ago](https://wordpress.org/support/topic/unknown-error-help-please/) * After I install wp-cache(manually, chmod to 777, asked web host to create the symbolic link, activate, edit wp-config.php by adding a line of command), my admin section started to be flooded by * Warning: Cannot modify header information – headers already sent by (output started at public_html/wordpress/wp-config.php:26) in public_html/wordpress/wp-includes/ pluggable.php on line 331 * Warning: Cannot modify header information – headers already sent by (output started at public_html/wordpress/wp-config.php:26) in public_html/wordpress/wp-includes/ pluggable.php on line 331 * These error are displayed every time I do something – eg. upload a photo, edit a post, activate/deactivate a plugin and etc. What does it mean? Viewing 4 replies - 1 through 4 (of 4 total) * Thread Starter [ingsiang](https://wordpress.org/support/users/ingsiang/) * (@ingsiang) * [18 years, 11 months ago](https://wordpress.org/support/topic/unknown-error-help-please/#post-588112) * Ok, I thought it has something to do with wp-cache, so I install it (removed everything), and ta-da, can’t even access my wp-admin. * Someone, help please! Thanks in advance. * By the way, would reinstalling wordpress solve this? * [ccoupe](https://wordpress.org/support/users/ccoupe/) * (@ccoupe) * [18 years, 11 months ago](https://wordpress.org/support/topic/unknown-error-help-please/#post-588120) * Seems likes thats your only option un(less you dig through the error logs and fix what it’s complaining about). Backup your database first! * [whooami](https://wordpress.org/support/users/whooami/) * (@whooami) * [18 years, 11 months ago](https://wordpress.org/support/topic/unknown-error-help-please/#post-588147) * your error is being caused by the edit you made to wp-config.php * You introduced a space or hidden chars before the opening `