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Resolved

(@zmalmgren)

In the “Above The Fold Optimization” screen, on the “Critical CSS” tab, if I use the “Extract Full CSS” by selecting “Home Page (Index)” and clicking “Print”, I get a new window with the URL of “https://www.planetscon.com/?extract-css=39bf18531a83fc138e3cfb5e2be27068&output=print”. However, the page displays as normal.

In the error logs of the nGinx server I get the following:

2016/12/22 12:31:32 [error] 4158#4158: *805 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Error: Class 'DOMDocument' not found in /var/www/planetscon_com/public_html/wp-content/plugins/above-the-fold-optimization/includes/extract-full-css.class.php:92
Stack trace:
#0 [internal function]: Abovethefold_ExtractFullCss->end_buffering('<!DOCTYPE html>...', 9)
#1 /var/www/planetscon_com/public_html/wp-includes/functions.php(3673): ob_end_flush()
#2 /var/www/planetscon_com/public_html/wp-includes/class-wp-hook.php(298): wp_ob_end_flush_all('')
#3 /var/www/planetscon_com/public_html/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters('', Array)
#4 /var/www/planetscon_com/public_html/wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#5 /var/www/planetscon_com/public_html/wp-includes/load.php(670): do_action('shutdown')
#6 [internal function]: shutdown_action_hook()
#7 {main}
  thrown in /var/www/planetscon_com/public_html/wp-content/plugins/above-the-fold-optimization/includes/extract-full-css.class.php on line 92" while reading upstream, client: <my ip addr>, server: , request: "GET /?extract-css=39bf18531a83fc138e3cfb5e2be27068&output=download HTTP/2.0", upstream: "fastcgi://unix:/run/php/planetscon_com.sock:", host: "www.planetscon.com"

I am running Ubuntu 16.04.1 LTS / nginx/1.10.0 (Ubuntu) / PHP 7.0.8-0ubuntu0.16.04.3 (cli) ( NTS )

Thank you, and please let me know what other information would be helpful.

Viewing 2 replies - 1 through 2 (of 2 total)

Plugin Author optimalisatie
(@optimalisatie)

8 years, 3 months ago
Hi zmalmgren,

Thank you for reporting the problem!

The class DOMDocument should be available by default in PHP 7.

https://php.net/manual/en/class.domdocument.php

Regrettably, we are not able to help with (advanced) server configuration.

I did a quick search in Google and a fix may be provided in the following topic:

https://stackoverflow.com/questions/35668702/php-7-domdocument-not-found

[ Signature moderated ]
- This reply was modified 8 years, 2 months ago by Jan Dembowski.
Thread Starter Zach Malmgren
(@zmalmgren)

8 years, 3 months ago
Jan,

Thank you for your help. I got it to work with the following:
```
sudo apt-get install php-xml
sudo service php7.0-fpm restart
```
However, the page still threw an error “PHP message: PHP Fatal error: Uncaught Error: Call to undefined function mb_convert_encoding()”. So I had to add:
```
sudo apt-get install php-mbstring
sudo service php7.0-fpm restart
```
Thanks again for your help!

Viewing 2 replies - 1 through 2 (of 2 total)

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