Title: PHP Error message on website needs fixed
Last modified: November 26, 2019

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# PHP Error message on website needs fixed

 *  [Why Not Advertising, LLC](https://wordpress.org/support/users/whyknott/)
 * (@whyknott)
 * [6 years, 5 months ago](https://wordpress.org/support/topic/php-error-message-on-website-needs-fixed/)
 * as soon as I installed Youtube Pro plugin to show videos on my website your WP
   advanced PDF pro plugin is throwing an error at the top of my clients website.
   Can you please help me get rid of the error message.
 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, class‘
   wpppdf’ does not have a method ‘ptp_pdfscheduleduration’ in /home/jamyer5/sandbox/
   wp-includes/class-wp-hook.php on line 288
 * Warning: array_merge(): Argument #1 is not an array in /home/jamyer5/sandbox/
   wp-includes/cron.php on line 834
 * Your help would be appreciated.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fphp-error-message-on-website-needs-fixed%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

The topic ‘PHP Error message on website needs fixed’ is closed to new replies.

 * ![](https://ps.w.org/wp-advanced-pdf/assets/icon-256x256.png?rev=1384838)
 * [WP Advanced PDF](https://wordpress.org/plugins/wp-advanced-pdf/)
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 * 0 replies
 * 2 participants
 * Last reply from: [Why Not Advertising, LLC](https://wordpress.org/support/users/whyknott/)
 * Last activity: [6 years, 5 months ago](https://wordpress.org/support/topic/php-error-message-on-website-needs-fixed/)
 * Status: not resolved