Wordpress error message

[nubevps]

Hello,

Today I found this error message in 2 Wordpress installations on my server:

=====
PHP Notice: Undefined index: HTTP_HOST in /usr/share/plesk-wp-cli/php/WP_CLI/Runner.php(847) : eval()'d code on line 90 PHP Notice: Undefined index: HTTP_HOST in /usr/share/plesk-wp-cli/php/WP_CLI/Runner.php(847) : eval()'d code on line 91 PHP Fatal error: Call to undefined function add_filter() in /usr/share/plesk-wp-cli/php/WP_CLI/Runner.php(847) : eval()'d code on line 116
=====

do you know how to fix it?, Wordpress is working correctly on affected domains.

 

[IgorG]

This looks like the issue from article https://kb.plesk.com/en/123569
Try to adapt solution.

 

[nubevps]

Hello Igor,

Thanks for your reply.

In my case issue is related to add_filter().

I checked wp-config.php and found add_filter() in 2 places:

=====
// remove x-pingback HTTP header
add_filter('wp_headers', function($headers) {
unset($headers['X-Pingback']);
return $headers;
});
// disable pingbacks
add_filter( 'xmlrpc_methods', function( $methods ) {
=====

how should I modify it?.

Regards.

 

[IgorG]

Try to comment these lines like:

// remove x-pingback HTTP header
// add_filter('wp_headers', function($headers) {
// unset($headers['X-Pingback']);
// return $headers;
// });
// disable pingbacks
// add_filter( 'xmlrpc_methods', function( $methods ) {

 

[nubevps]

ok will try that.

afte making changes should I run something in Plesk panel so error dissapear?.