Title: HTTP ERROR 500
Last modified: March 10, 2019

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# HTTP ERROR 500

 *  [pidihajzlik](https://wordpress.org/support/users/pidihajzlik/)
 * (@pidihajzlik)
 * [7 years, 3 months ago](https://wordpress.org/support/topic/http-error-500-158/)
 * Hello I have a problem when people want to register on my site so it gives the
   HTTP ERROR 500 and I do not know what
 * ERROR LOG:
    Fatal error: Uncaught Error: Call to undefined function utf8_decode()
   in /var/www/html/herni-archa.cz/master/wp-content/plugins/ultimate-member/includes/
   core/um-actions-form.php:453
 * Stack Trace
    1. um_submit_form_errors_hook_(Array) /var/www/html/herni-archa.
   cz/master/wp-includes/class-wp-hook.php:286 2. WP_Hook->apply_filters(”, Array)/
   var/www/html/herni-archa.cz/master/wp-includes/class-wp-hook.php:310 3. WP_Hook-
   >do_action(Array) /var/www/html/herni-archa.cz/master/wp-includes/plugin.php:
   465 4. do_action(‘um_submit_form_…’, Array) /var/www/html/herni-archa.cz/master/
   wp-content/plugins/ultimate-member/includes/core/um-actions-form.php:236 5. um_submit_form_errors_hook(
   Array) /var/www/html/herni-archa.cz/master/wp-includes/class-wp-hook.php:286 
   6. WP_Hook->apply_filters(”, Array) /var/www/html/herni-archa.cz/master/wp-includes/
   class-wp-hook.php:310 7. WP_Hook->do_action(Array) /var/www/html/herni-archa.
   cz/master/wp-includes/plugin.php:465 #7 /var/www/html/herni-archa.cz/master/wp-
   content/plugins/ultima in /var/www/html/herni-archa.cz/master/wp-content/plugins/
   ultimate-member/includes/core/um-actions-form.php on line 453
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fhttp-error-500-158%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

The topic ‘HTTP ERROR 500’ is closed to new replies.

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## Tags

 * [HTTP](https://wordpress.org/support/topic-tag/http/)

 * 0 replies
 * 1 participant
 * Last reply from: [pidihajzlik](https://wordpress.org/support/users/pidihajzlik/)
 * Last activity: [7 years, 3 months ago](https://wordpress.org/support/topic/http-error-500-158/)
 * Status: not resolved