Title: Fatal error
Last modified: May 29, 2026

---

# Fatal error

 *  [themefour wp](https://wordpress.org/support/users/masouddarvishi1992/)
 * (@masouddarvishi1992)
 * [2 weeks, 2 days ago](https://wordpress.org/support/topic/fatal-error-4983/)
 * Hi. In the new update (2.1.43) this bug has appeared (when editing pages with
   customize.php):
 * Fatal error: Uncaught TypeError: substr_count(): Argument #1 ($haystack) must
   be of type string, array given in
   \wp-content\themes\blocksy\inc\css\fundamentals.
   php on line 150

Viewing 1 replies (of 1 total)

 *  [Eduard](https://wordpress.org/support/users/cteduard/)
 * (@cteduard)
 * [2 weeks, 1 day ago](https://wordpress.org/support/topic/fatal-error-4983/#post-18922839)
 * Hello [@masouddarvishi1992](https://wordpress.org/support/users/masouddarvishi1992/)
 * Thank you for notifying us about this. An update will be released shortly that
   fixes the error automatically. Please install it once it reaches you and you’ll
   be good to go.

Viewing 1 replies (of 1 total)

You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-4983%2F%3Foutput_format%3Dmd&locale=en_US)
to reply to this topic.

 * ![](https://i0.wp.com/themes.svn.wordpress.org/blocksy/2.1.45/screenshot.jpg)
 * Blocksy
 * [Support Threads](https://wordpress.org/support/theme/blocksy/)
 * [Active Topics](https://wordpress.org/support/theme/blocksy/active/)
 * [Unresolved Topics](https://wordpress.org/support/theme/blocksy/unresolved/)
 * [Reviews](https://wordpress.org/support/theme/blocksy/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Eduard](https://wordpress.org/support/users/cteduard/)
 * Last activity: [2 weeks, 1 day ago](https://wordpress.org/support/topic/fatal-error-4983/#post-18922839)
 * Status: not resolved