Title: Database Errors – Can You explain?
Last modified: August 19, 2016

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# Database Errors – Can You explain?

 *  [warner444](https://wordpress.org/support/users/warner444/)
 * (@warner444)
 * [15 years, 9 months ago](https://wordpress.org/support/topic/database-errors-can-you-explain/)
 * Hi
 * I am getting these errors reported in my error_log. I don’t really know what 
   they mean or what I can do about them.
 * [24-Aug-2010 09:43:33] PHP Warning: Illegal offset type in /home/warner44/public_html/
   blog/wp-includes/cache.php on line 363
 * [24-Aug-2010 18:26:10] XML-RPC: xmlrpcmsg::parseResponse: no response received
   from server.
    [24-Aug-2010 18:57:19] XML-RPC: xmlrpcmsg::parseResponse: no response
   received from server. [24-Aug-2010 20:00:04] PHP Fatal error: Call to undefined
   function get_plugins() in /home/warner44/public_html/blog/wp-content/plugins/
   wp-malwatch/modules/scan-locale/scan-locale.php on line 37
 * And this one Many Times:
 * [24-Aug-2010 22:40:34] WordPress database error Unknown column ‘category_nicename’
   in ‘where clause’ for query SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts
   INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
   INNER JOIN wp_term_taxonomy ON (wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.
   term_taxonomy_id) WHERE 1=1 AND wp_term_taxonomy.taxonomy = ‘category’ AND wp_term_taxonomy.
   term_id IN (‘942’) AND wp_posts.post_type = ‘post’ AND (wp_posts.post_status 
   = ‘publish’) AND category_nicename = ’email-marketing-strategies’ GROUP BY wp_posts.
   ID ORDER BY wp_posts.post_date DESC LIMIT 0, 15 made by require, wp, WP->main,
   WP->query_posts, WP_Query->query, WP_Query->get_posts

Viewing 1 replies (of 1 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [15 years, 9 months ago](https://wordpress.org/support/topic/database-errors-can-you-explain/#post-1641434)
 * Have you tried:
 * – deactivating **all** plugins to see if this resolves the problem? If this works,
   re-activate the plugins one by one until you find the problematic plugin(s).
 * – switching to the default theme to rule out any theme-specific problems?

Viewing 1 replies (of 1 total)

The topic ‘Database Errors – Can You explain?’ is closed to new replies.

## Tags

 * [database](https://wordpress.org/support/topic-tag/database/)
 * [Database Error](https://wordpress.org/support/topic-tag/database-error/)
 * [error_log](https://wordpress.org/support/topic-tag/error_log/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [esmi](https://wordpress.org/support/users/esmi/)
 * Last activity: [15 years, 9 months ago](https://wordpress.org/support/topic/database-errors-can-you-explain/#post-1641434)
 * Status: not resolved

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