Title: Fatal error: call_user_func_array() expects parameter 1 to be a valid callback
Last modified: September 9, 2016

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# Fatal error: call_user_func_array() expects parameter 1 to be a valid callback

 *  [Cameron Barrett](https://wordpress.org/support/users/cameronbarrett/)
 * (@cameronbarrett)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-call_user_func_array-expects-parameter-1-to-be-a-valid-callback/)
 * I just tried this on a multisite and when trying to activate it for a single 
   site, I get this error:
 * Plugin could not be activated because it triggered a fatal error.
 *     ```
       Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'setup_table' not found or invalid function name in /full/path/to/wp-includes/plugin.php on line 524
   
       Fatal error: Call to a member function add_cap() on a non-object in /full/path/to/wp-content/plugins/digiwidgets-image-editor/digiwidgets-image-editor.php on line 344
       ```
   

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [csvehla](https://wordpress.org/support/users/csvehla/)
 * (@csvehla)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-call_user_func_array-expects-parameter-1-to-be-a-valid-callback/#post-8179495)
 * Hey Cameron,
 * I am sorry that you are having trouble with the plugin. I know for sure currently
   DigiWidgets does not work for multisites. Would you be able to reach out to me
   at [corey@digiwidgets.com](https://wordpress.org/support/topic/fatal-error-call_user_func_array-expects-parameter-1-to-be-a-valid-callback/corey@digiwidgets.com?output_format=md)
   to provide me with more information like wordpress version, php version, and 
   if possible a testing site where the error is reproduced?
 * Thank you

Viewing 1 replies (of 1 total)

The topic ‘Fatal error: call_user_func_array() expects parameter 1 to be a valid
callback’ is closed to new replies.

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 * [DigiWidgets Image Editor](https://wordpress.org/plugins/digiwidgets-image-editor/)
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 * 1 reply
 * 2 participants
 * Last reply from: [csvehla](https://wordpress.org/support/users/csvehla/)
 * Last activity: [9 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-call_user_func_array-expects-parameter-1-to-be-a-valid-callback/#post-8179495)
 * Status: not resolved