Title: error after installing
Last modified: August 31, 2016

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# error after installing

 *  [unione](https://wordpress.org/support/users/unione/)
 * (@unione)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-after-installing-8/)
 * Hi,
 * the following error appears after installing the plugin;
    /helpcentre/wp-includes/
   plugin.php on line 754
 * when you attempt to print, another error appears:
    Fatal error: Call to a member
   function get() on a non-object in /nas/content/staging/helpcentre/wp-includes/
   query.php on line 28
 * please try to print on this post:
    [http://uo-helpcentre-wpengine-com.helpcentre.staging.wpengine.com/knowledgebase/add-and-manage-staff-types/](http://uo-helpcentre-wpengine-com.helpcentre.staging.wpengine.com/knowledgebase/add-and-manage-staff-types/)
 * please advise.
 * thanks!
 * ps. the plugin is installed on a multi-site wordpress installatioin
 * [https://wordpress.org/plugins/dk-pdf/](https://wordpress.org/plugins/dk-pdf/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [dinamiko](https://wordpress.org/support/users/dinamiko/)
 * (@dinamiko)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-after-installing-8/#post-7189488)
 * Hi unione,
 * I see this error related to genesis-sample theme:
    Warning: Missing argument 
   1 for plugin_dir_url(), called in /nas/content/staging/helpcentre/wp-content/
   themes/genesis-sample/functions.php on line 178 and defined in /nas/content/staging/
   helpcentre/wp-includes/plugin.php on line 754
 * can you switch temporally to a default wp theme (like Twenty Fifteen or Sixteen)
   and see if the error in DK PDF persist?
 * if yes, disable temporally all plugins (leave DK PDF active), the error persist?
 * if not, active plugins one by one to see with which plugin DK PDF has the conflict,
 * do all the above and tell me, thanks.

Viewing 1 replies (of 1 total)

The topic ‘error after installing’ is closed to new replies.

 * ![](https://ps.w.org/dk-pdf/assets/icon-256x256.png?rev=3396282)
 * [DK PDF - WordPress PDF Generator](https://wordpress.org/plugins/dk-pdf/)
 * [Support Threads](https://wordpress.org/support/plugin/dk-pdf/)
 * [Active Topics](https://wordpress.org/support/plugin/dk-pdf/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/dk-pdf/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/dk-pdf/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [dinamiko](https://wordpress.org/support/users/dinamiko/)
 * Last activity: [10 years, 2 months ago](https://wordpress.org/support/topic/error-after-installing-8/#post-7189488)
 * Status: not resolved