Title: Fatal error
Last modified: August 19, 2016

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# Fatal error

 *  [yishao](https://wordpress.org/support/users/yishao/)
 * (@yishao)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-37/)
 * Fatal error: Call to undefined function wp_register_sidebar_widget() in /home/
   yishao/domains/yanjiecao.com/public_html/wp-admin/includes/dashboard.php on line
   31
 * Why?

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [aqr](https://wordpress.org/support/users/aqr/)
 * (@aqr)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-37/#post-720611)
 * Logged into the admin, upgraded database, the checked out my theme was displaying
   OK. Tried to get back into the admin and got the same error above.
 *  [Mistainu](https://wordpress.org/support/users/mistainu/)
 * (@mistainu)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-37/#post-720694)
 * hello, you must be K2 Users too (or you somehow also turned off automatic’s widgets
   plugin). here’s the solution
 * [http://chaotictech.wordpress.com/2008/03/28/k2-wordpress-25-broken-i-can-fix-that/](http://chaotictech.wordpress.com/2008/03/28/k2-wordpress-25-broken-i-can-fix-that/)
 *  Thread Starter [yishao](https://wordpress.org/support/users/yishao/)
 * (@yishao)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-37/#post-720773)
 * A ha you are right!

Viewing 3 replies - 1 through 3 (of 3 total)

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

## Tags

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

 * 3 replies
 * 3 participants
 * Last reply from: [yishao](https://wordpress.org/support/users/yishao/)
 * Last activity: [18 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-37/#post-720773)
 * Status: not resolved

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