I am having some issues determining the solution to this problem below. The website was sent to our team to fix.

Turned on error reporting in wp-config.php:
define('WP_DEBUG', true);

WordPress version: 5.3.2
PHP version: 7.2

WordPress Theme: Grow Pro

Fatal error: Uncaught Error: Class 'WP_Block_Styles_Registry' not 
found in /home/website/public_html/clientsite.com/wp-includes/script- 
loader.php:2902 Stack trace: #0 
hook.php(288): enqueue_block_styles_assets('') #1 
hook.php(312): WP_Hook->apply_filters(NULL, Array) #2 
WP_Hook->do_action(Array) #3 
loader.php(2856): do_action('enqueue_block_a...') #4 
hook.php(288): wp_common_block_scripts_and_styles('') #5 
hook.php(312): WP_Hook->apply_filters(NULL, Array) #6 
WP_Hook->do_action(Array) #7 /home/website/public_html/ir in 
on line 2902

There has been a critical error on your website.

Learn more about debugging in WordPress.

For privacy reasons, I wouldn't be sharing the live website link.

Any help with resolving these errors would be greatly appreciated.

Thank you in advance,
Nick Hiebert

  • Did you recently update WP? Sounds like this issue.
    – kero
    Commented Jan 30, 2020 at 15:59
  • @kero sounded very similar. Managed to figure out the issue. Commented Jan 30, 2020 at 16:21
  • This may help you. wphuntrz.com/d/…
    – jogesh_pi
    Commented Jan 31, 2020 at 5:09
  • @jogesh_pi we're looking at the issues with the WordPress update as we speak. So I'll report back what ends up being the fix. Commented Feb 12, 2020 at 15:02

1 Answer 1


From this post on WordPress.org "Fixing fatal error after 5.30 update", it mentions issues with Gutenberg.

I installed the Glutenberg plugin and the website is now loading properly.

Hope this comes to use for the future for anyone else!

  • Watch out, I don't believe you actually fixed your problem and just avoided the error message. The post you mention there is mine, and I did not have the message Class 'WP_Block_Styles_Registry' not found but another one. Your error probably comes from an incomplete update. Other stuff may break until you fix this!
    – kero
    Commented Jan 30, 2020 at 17:35
  • @kero Sounds good, it is likely a WordPress update issue. I'll report back the actual fix to this once it's resolved. Commented Feb 12, 2020 at 15:03

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