Title: Fatal Error
Last modified: June 6, 2018

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# Fatal Error

 *  [darcimontanari](https://wordpress.org/support/users/darcimontanari/)
 * (@darcimontanari)
 * [8 years ago](https://wordpress.org/support/topic/fatal-error-2930/)
 * When i try to activate de plugin, there comes this message:
 * Fatal error: Call to undefined function json_last_error() in /home/prgramaespacoalt/
   public_html/wp-content/plugins/ik-facebook/ik_facebook.php on line 738
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-2930%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

The topic ‘Fatal Error’ is closed to new replies.

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 * [Frequently Asked Questions](https://wordpress.org/plugins/ik-facebook/#faq)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/ik-facebook/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/ik-facebook/reviews/)

## Tags

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

 * 0 replies
 * 1 participant
 * Last reply from: [darcimontanari](https://wordpress.org/support/users/darcimontanari/)
 * Last activity: [8 years ago](https://wordpress.org/support/topic/fatal-error-2930/)
 * Status: not resolved