Title: Error code Last modified: July 2, 2018 --- # Error code * Resolved [ThecounT](https://wordpress.org/support/users/thecount/) * (@thecount) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/) * Warning: preg_replace_callback(): Requires argument 2, ”, to be a valid callback in /home/thecount/public_html/wp-content/plugins/amp/includes/utils/class-amp- dom-utils.php on line 264 * Thanks! * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-code-59%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 11 replies - 1 through 11 (of 11 total) * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10456522) * What version of PHP are you running? * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10456524) * Source code for where the error is coming from: [https://github.com/Automattic/amp-wp/blob/d9b20172406844b66e0732e2a2e4d6e512042eb4/includes/utils/class-amp-dom-utils.php#L264](https://github.com/Automattic/amp-wp/blob/d9b20172406844b66e0732e2a2e4d6e512042eb4/includes/utils/class-amp-dom-utils.php#L264) * I don’t see why `$replace_callback`, a closure, would be an invalid callback. * Thread Starter [ThecounT](https://wordpress.org/support/users/thecount/) * (@thecount) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10456814) * Ok thank you very much for your time. I am waiting on server team to tell me sql version. * Is there any other info I can provide you to help you? I am using twenty eleven theme. centos 5. * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10456863) * Please determine the PHP version not the MySQL version. But in any case I cannot see what would be wrong here. * Thread Starter [ThecounT](https://wordpress.org/support/users/thecount/) * (@thecount) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10459012) * OK sorry about that erroneous information. The server is currently running on php version PHP 5.4.45. * I will say, this issue popped up with an update to the plugin time before last I believe. We had no issues with the plugin up to that time. Then we start receiving email from google advising of error issues with amp that might also effect search results. Again, we did not change anything on our end, only faithfully updated your plugin as prompted. * After update, on Feb 14, we started receiving emails from googs… * > “Search Console has identified that your site is affected by 5 new Accelerated > Mobile Pages related issues. This means that Accelerated Mobile Pages may be > negatively affected in Google Search results. We encourage you to fix these > issues. > Top 5 new issues found, ordered by number of affected pages: > Error in required > structured data element > The inline ‘style’ attribute is not allowed in AMP documents, use ‘style amp- > custom’ tag instead > Tag or text which is only allowed inside the body section found outside of > the body section > The tag ‘BODY’ appears more than once in the document. > Invalid URL for HTML attribute ‘href’ in tag ‘a'” * Then more email with different error alerts/ warnings on Feb 17, May 9, June 25. * And then one today: * > Search Console has identified that your site is affected by 2 new AMP related > issues. This means that AMP may be negatively affected in Google Search results. > We encourage you to fix these issues. > Top new issues found, ordered by number of affected pages: > Referenced AMP > URL is not an AMP > URL not found (404) * Again, all we did was update plugin which was operating fine before. I am going to disable at this point and I again thank you for your time and efforts on this plugin. I am excited to see this resolved. - This reply was modified 7 years, 11 months ago by [ThecounT](https://wordpress.org/support/users/thecount/). - This reply was modified 7 years, 11 months ago by [ThecounT](https://wordpress.org/support/users/thecount/). * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10459241) * PHP 5.4 is quite an old version. I suggest you upgrading to a more recent version, at least 5.6. That could resolve this issue for you. You will also see performance improvements on your site when you upgrade to a newer version of PHP, as well as having better security with a currently-supported PHP version. * Thread Starter [ThecounT](https://wordpress.org/support/users/thecount/) * (@thecount) * [7 years, 11 months ago](https://wordpress.org/support/topic/error-code-59/#post-10459319) * Ok thank you very much for that. I contacted server team and they are upgrading me to CentOS 7, which will allow newer PHP version. If I get enhanced performance through process that will be a nice bonus and maybe even the silver lining to all this. * The process will take some time so I will hit you back to let you know if upgrade fixed issue at hand. * Again, thank you for your valuable time and have a wonderful day. * Thread Starter [ThecounT](https://wordpress.org/support/users/thecount/) * (@thecount) * [7 years, 10 months ago](https://wordpress.org/support/topic/error-code-59/#post-10478248) * Hi Weston, I received the CentOS 7 upgrade and your plugin now works perfectly. Thank you for all your valuable help. * May I ask on another note, is the amp single page the best place to place the adsense smart ad code? I placed the code there but I am not yet seeing anything showing up. * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 10 months ago](https://wordpress.org/support/topic/error-code-59/#post-10478261) * What code specifically? The `amp-auto-ads` component? Note that we’ve seen ads get served for mobile with ads for desktop coming later. * Sharing a URL would be helpful. * Thread Starter [ThecounT](https://wordpress.org/support/users/thecount/) * (@thecount) * [7 years, 10 months ago](https://wordpress.org/support/topic/error-code-59/#post-10478517) * Hey thanks Weston. * via adsense: * “Copy and paste this script in the head tag of your AMP HTML” *