Title: PHP 7.2 Warning Last modified: December 4, 2018 --- # PHP 7.2 Warning * [feedarmy](https://wordpress.org/support/users/feedarmy/) * (@feedarmy) * [7 years, 6 months ago](https://wordpress.org/support/topic/php-7-2-warning-4/) * I upgraded to PHP 7.2 and get the following warning. * `wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 1197\n',` Viewing 3 replies - 1 through 3 (of 3 total) * Plugin Author [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/) * (@donncha) * [7 years, 5 months ago](https://wordpress.org/support/topic/php-7-2-warning-4/#post-11016334) * What is the error? Looks like it was removed by the editor here. * Thread Starter [feedarmy](https://wordpress.org/support/users/feedarmy/) * (@feedarmy) * [7 years, 5 months ago](https://wordpress.org/support/topic/php-7-2-warning-4/#post-11022710) * The error is : AH01071: Got error ‘PHP message: PHP Warning: Cannot modify header information – headers already sent by (output started at /var/www/vhosts/…/nav- desktop.php:1) in /var/www/vhosts/…/kb/wp-content/plugins/wp-super-cache/wp-cache- phase2.php on line 1197\n’ * [Saša](https://wordpress.org/support/users/stodorovic/) * (@stodorovic) * [7 years, 5 months ago](https://wordpress.org/support/topic/php-7-2-warning-4/#post-11051656) * It seems similar issue as [“WP Super Cache and PHP 7?”](https://wordpress.org/support/topic/wp-super-cache-and-php-7/). It isn’t related to WPSC plugin and it could be an issue with other plugins ( sitemaps,feeds for example). * It’s most likely that file _nav-desktop.php_ is saved with [a Byte order mark (BOM)](http://en.wikipedia.org/wiki/Byte_order_mark#UTF-8) or contains empty space before an opening `