Title: Error Message with RSS Feed?
Last modified: August 18, 2016

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# Error Message with RSS Feed?

 *  Resolved [wczone](https://wordpress.org/support/users/wczone/)
 * (@wczone)
 * [18 years, 6 months ago](https://wordpress.org/support/topic/error-message-with-rss-feed/)
 * Hi Folks:
    I am using FeedWordPress as an RSS agregator.
 * I am receiving an error that happens maybe once an hour at each site. I have 
   tried different templates/themes and receive the same error.
 * Here is the Error:
 * Warning: array_map() [function.array-map]: The first argument, ‘map_attrs’, should
   be either NULL or a valid callback in /home/learnthe/public_html/blog/wp-includes/
   rss.php on line 166
 * Warning: join() [function.join]: Bad arguments. in /home/learnthe/public_html/
   blog/wp-includes/rss.php on line 166
 * Warning: array_map() [function.array-map]: The first argument, ‘map_attrs’, should
   be either NULL or a valid callback in /home/learnthe/public_html/blog/wp-includes/
   rss.php on line 166
 * Warning: join() [function.join]: Bad arguments. in /home/learnthe/public_html/
   blog/wp-includes/rss.php on line 166
 * Warning: array_map() [function.array-map]: The first argument, ‘map_attrs’, should
   be either NULL or a valid callback in /home/learnthe/public_html/blog/wp-includes/
   rss.php on line 166
 * Warning: join() [function.join]: Bad arguments. in /home/learnthe/public_html/
   blog/wp-includes/rss.php on line 166
 * Warning: array_map() [function.array-map]: The first argument, ‘map_attrs’, should
   be either NULL or a valid callback in /home/learnthe/public_html/blog/wp-includes/
   rss.php on line 166
 * It happens on different domains (different databases).
    Example sites are: learntheology.
   com/blog/ and mom4jesus.com
 * The errors repeat on the home page about 15 times. Sometimes I have to wait and
   then hit refresh several timesa and they go away.
 * Also, I have the latest version of both WordPress and FeedWordPress.
 * Thanks for any help.
    Matthew

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

 *  Thread Starter [wczone](https://wordpress.org/support/users/wczone/)
 * (@wczone)
 * [18 years, 6 months ago](https://wordpress.org/support/topic/error-message-with-rss-feed/#post-662724)
 * Hi.. I just wanted to let everyone no what the problem was.
 * One of the RSS feeds had/has something wrong with it. It appears that when WordPress
   tried to read it, it would cause an error. I accidentally/quessed at which one
   was causing problems. It was an “atom” feed, so I switched the feed to 2.0 RSS
   from the same site, and it works like a charm now.
 *  [dedalos](https://wordpress.org/support/users/dedalos/)
 * (@dedalos)
 * [18 years, 4 months ago](https://wordpress.org/support/topic/error-message-with-rss-feed/#post-662839)
 * Hi weczone, Hi All,
 * I have the same issue in my wp 2.3.2 installation. Using the rss widget that 
   comes by default in wp.
 * I don’t expect that this issue were so hard to find (explanation, solution). 
   And I’m not sure what is exactly the solution, in despite of the comments of 
   wczone.
 * If you introduce in google this string:
    “wp-includes/rss.php on line” The first
   argument, map_attrs You will find a lot of “error logs” of other wordpress with
   the same problem. My error-log is: ************ [03-Feb-2008 19:16:18] PHP Warning:
   array_map() [[function.array-map](https://wordpress.org/support/topic/error-message-with-rss-feed/function.array-map?output_format=md)]:
   The first argument, ‘map_attrs’, should be either NULL or a valid callback in/
   usr/home/dedalos/public_html/wp-includes/rss.php on line 166 [03-Feb-2008 19:
   16:18] PHP Warning: join() [[function.join](https://wordpress.org/support/topic/error-message-with-rss-feed/function.join?output_format=md)]:
   Bad arguments. in /usr/home/dedalos/public_html/wp-includes/rss.php on line 166************
   And, as I see, this problem could be solved temporally by switching the theme
   of the blog.
 * Please, Could someone give me some explanation about that?. I’m sure it’ll very
   appreciated not only for me.
 * Thank very much.
    Roy

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

The topic ‘Error Message with RSS Feed?’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [dedalos](https://wordpress.org/support/users/dedalos/)
 * Last activity: [18 years, 4 months ago](https://wordpress.org/support/topic/error-message-with-rss-feed/#post-662839)
 * Status: resolved

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