Title: error report plugin.php on line 173
Last modified: August 20, 2016

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# error report plugin.php on line 173

 *  [magcrew](https://wordpress.org/support/users/magcrew/)
 * (@magcrew)
 * [13 years, 5 months ago](https://wordpress.org/support/topic/error-report-pluginphp-on-line-173/)
 * im not sure what i did to make this happen and that is making it difficult for
   me to fix.
 * im having an error on every page i post now and it reads
 * Warning: call_user_func_array() [function.call-user-func-array]: First argument
   is expected to be a valid callback, ” was given in /home/username/public_html/
   wp-includes/plugin.php on line 173
 * any input would be appreciated.
 * thanks

Viewing 1 replies (of 1 total)

 *  Moderator [t-p](https://wordpress.org/support/users/t-p/)
 * (@t-p)
 * [13 years, 5 months ago](https://wordpress.org/support/topic/error-report-pluginphp-on-line-173/#post-3314549)
 * -deactivating ALL plugins (yes, all) temporarily to narrow down the problem. 
   If the problem goes away, re-activate them individually (one-by-one) to find 
   the problematic plugin(s). If you can’t get into your admin dashboard, try [resetting the plugins folder ](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)
   by FTP or phpMyAdmin. Sometimes, an apparently inactive plugin can still cause
   problems (because the hooks remain unless plugins completely removed or some 
   plugins stick around in cached files. So by renaming the folder, you break them
   and force them inactive). If applicible, also remember to deactivate any plugins
   in the mu-plugins folder. The easiest way is to rename that folder to mu-plugins-
   old
    – To rule out any theme-specific issue, try switching to the unedited default
   twenty twelve theme for a moment using the WP dashboard. If you don’t have access
   to your admin area, you can switch to the default theme by renaming your current
   theme’s folder in wp-content/themes via FTP or SFTP or whatever file management
   application your host provides.

Viewing 1 replies (of 1 total)

The topic ‘error report plugin.php on line 173’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [t-p](https://wordpress.org/support/users/t-p/)
 * Last activity: [13 years, 5 months ago](https://wordpress.org/support/topic/error-report-pluginphp-on-line-173/#post-3314549)
 * Status: not resolved

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