call_user_func_array() expects parameter 1 to be a valid callback

Dear ENFOLD Support

The logfiles show following error:

23537#0: *6950 FastCGI sent in stderr: “PHP message: PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘wdc_load_fonts’ not found or invalid function name in /var/www/vhosts/xxx/xxx/wp-includes/class-wp-hook.php on line 286” while reading response header from upstream

foreach ( $this->callbacks[ $priority ] as $the_ ) {
				if ( ! $this->doing_action ) {
					$args[0] = $value;
				}

				// Avoid the array_slice if possible.
				if ( $the_['accepted_args'] == 0 ) {
					$value = call_user_func_array( $the_['function'], array() );
				} elseif ( $the_['accepted_args'] >= $num_args ) {
					$value = call_user_func_array( $the_['function'], $args );
				} else {
					$value = call_user_func_array( $the_['function'], array_slice( $args, 0, (int) $the_['accepted_args'] ) );
				}

What is the proper way to correct that?

Best regards

• This topic was modified 5 years, 3 months ago by Jaispirit.