Title: Widgeterror
Last modified: August 19, 2016

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# Widgeterror

 *  [arnoo-1](https://wordpress.org/support/users/arnoo-1/)
 * (@arnoo-1)
 * [15 years, 1 month ago](https://wordpress.org/support/topic/widgeterror/)
 * Hello,
 * I have installed the new version of WP 3.1
    But with this upgrade my theme has
   a problem in the sidebar. It shows this code:
 * `Warning: array_key_exists() [function.array-key-exists]: The second argument
   should be either an array or an object in /wp-includes/widgets.php on line 858`
 * I tried to change of theme but no result.
    Do you have any tip about this problem?
 * Thanks
    Arno

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

 *  [eugenealegiojo](https://wordpress.org/support/users/eugenealegiojo/)
 * (@eugenealegiojo)
 * [15 years, 1 month ago](https://wordpress.org/support/topic/widgeterror/#post-1967493)
 * Same issue [here](http://wordpress.org/support/topic/changing-prefix-wp-causes-warning-array_key_exists?replies=12).
   There are some fixed too.
 * Hope it helps.
 *  Thread Starter [arnoo-1](https://wordpress.org/support/users/arnoo-1/)
 * (@arnoo-1)
 * [15 years, 1 month ago](https://wordpress.org/support/topic/widgeterror/#post-1967499)
 * Ok thanks a lot!
    I delete this option in my table and it is good!
 * Arno

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

The topic ‘Widgeterror’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [arnoo-1](https://wordpress.org/support/users/arnoo-1/)
 * Last activity: [15 years, 1 month ago](https://wordpress.org/support/topic/widgeterror/#post-1967499)
 * Status: not resolved

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