Title: Fatal Errors
Last modified: August 21, 2016

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# Fatal Errors

 *  [AnnaGallow](https://wordpress.org/support/users/annagallow/)
 * (@annagallow)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/fatal-errors-20/)
 * Hello,
 * I have WF installed on over 50 websites and absolutely love the plugin! However,
   I am having a problem with it on one single site and recently started getting
   these errors and the site crashes:
 * > Warning: require_once(Diff/Renderer/Html/SideBySide.php): failed to open stream:
   > No such file or directory in /home/content/50/11184350/html/wp-content/plugins/
   > wordfence/lib/wordfenceClass.php on line 6
   > Fatal error: require_once(): Failed opening required ‘Diff/Renderer/Html/SideBySide.
   > php’ (include_path=’.:/usr/local/php5_4/lib/php’) in /home/content/50/11184350/
   > html/wp-content/plugins/wordfence/lib/wordfenceClass.php on line 6
 * I disabled the plugin and now everything works properly. Any thoughts?
 * Thanks in advance for the help and all the hard work that you do!
 * [https://wordpress.org/plugins/wordfence/](https://wordpress.org/plugins/wordfence/)

The topic ‘Fatal Errors’ is closed to new replies.

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## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * 0 replies
 * 1 participant
 * Last reply from: [AnnaGallow](https://wordpress.org/support/users/annagallow/)
 * Last activity: [11 years, 10 months ago](https://wordpress.org/support/topic/fatal-errors-20/)
 * Status: not resolved