Title: [Plugin: Debug-Bar-Extender] Error running plugin
Last modified: August 19, 2016

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# [Plugin: Debug-Bar-Extender] Error running plugin

 *  [Sam Margulies](https://wordpress.org/support/users/gluten/)
 * (@gluten)
 * [15 years, 1 month ago](https://wordpress.org/support/topic/plugin-debug-bar-extender-error-running-plugin/)
 * I get this error trying to run this plugin:
    Warning: call_user_func_array() 
   expects parameter 1 to be a valid callback, class ‘Debug_Bar_Extender’ does not
   have a method ‘trace_memcache_essentials’ in wp-includes/plugin.php on line 395
 * [http://wordpress.org/extend/plugins/debug-bar-extender/](http://wordpress.org/extend/plugins/debug-bar-extender/)

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

 *  Plugin Author [Thorsten Ott](https://wordpress.org/support/users/tott/)
 * (@tott)
 * [15 years, 1 month ago](https://wordpress.org/support/topic/plugin-debug-bar-extender-error-running-plugin/#post-1953516)
 * Thanks for reporting this. I just committed an update that will prevent this 
   warning.
 * Did you run into any functionality issues. This is just a warning and should 
   not have effected the functionality.
 * Best
    Thorsten
 *  Thread Starter [Sam Margulies](https://wordpress.org/support/users/gluten/)
 * (@gluten)
 * [15 years, 1 month ago](https://wordpress.org/support/topic/plugin-debug-bar-extender-error-running-plugin/#post-1953519)
 * I just installed the plugin to try it out but I couldn’t get it working and the
   error was a little off-putting. I’ll try again now!

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

The topic ‘[Plugin: Debug-Bar-Extender] Error running plugin’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/debug-bar-extender.svg)
 * [Debug-Bar-Extender](https://wordpress.org/plugins/debug-bar-extender/)
 * [Support Threads](https://wordpress.org/support/plugin/debug-bar-extender/)
 * [Active Topics](https://wordpress.org/support/plugin/debug-bar-extender/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/debug-bar-extender/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/debug-bar-extender/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Sam Margulies](https://wordpress.org/support/users/gluten/)
 * Last activity: [15 years, 1 month ago](https://wordpress.org/support/topic/plugin-debug-bar-extender-error-running-plugin/#post-1953519)
 * Status: not resolved