Title: Fatal error: json_last_error
Last modified: August 20, 2016

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# Fatal error: json_last_error

 *  [Jarrel](https://wordpress.org/support/users/jarrel/)
 * (@jarrel)
 * [13 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-json_last_error/)
 * I´m desperate!
 * I downloaded a program called “WCM User Language Switcher” to translate my Swedish
   homepage to English, but when I activated the program I just got a massage saying:
 * Fatal error: Call to undefined function json_last_error() in /home/userA/a1319300/
   public_html/jarrelgolf.com/wp-content/plugins/wcm-user-language-switcher/wcm_lang_switch.
   class.php on line 249
 * Now I can´t do anything with my wordpress page!!! What am I suppose to do? How
   can I undefine the function json_lasr_error? Call line 249… what?
 * Please help!

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

## Tags

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

 * 0 replies
 * 1 participant
 * Last reply from: [Jarrel](https://wordpress.org/support/users/jarrel/)
 * Last activity: [13 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-json_last_error/)
 * Status: not resolved

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