Update wordpress fail – There has been a critical error on your website

During Updates. The website halted. And when refresh. “There’s critical error on website” shown.
Please help on how to fix it. Thanks. I believe many do face this problem.

Deprecated: Function create_function() is deprecated in
/public_html/newsite/wp-content/plugins/revslider/includes/framework/functions-wordpress.class.php
on line 258

Fatal error: Uncaught Error: Call to undefined function
register_block_type_from_metadata() in
/public_html/newsite/wp-includes/blocks/archives.php:119 Stack trace:
#0 /public_html/newsite/wp-includes/class-wp-hook.php(287): register_block_core_archives(”) #1
/public_html/newsite/wp-includes/class-wp-hook.php(311):
WP_Hook->apply_filters(NULL, Array) #2
/public_html/newsite/wp-includes/plugin.php(478):
WP_Hook->do_action(Array) #3
/public_html/newsite/wp-settings.php(540): do_action(‘init’) #4
/public_html/newsite/wp-config.php(90): require_once(‘/home/…’) #5
/public_html/newsite/wp-load.php(37):
require_once(‘/home/theamleo/…’) #6
/public_html/newsite/wp-blog-header.php(13):
require_once(‘/home/theamleo/…’) #7 /public_html/index.php(17):
require(‘/home/theamleo/…’) #8 {main} thrown in
/public_html/newsite/wp-includes/blocks/archives.php on line 119

The error is caused because of the ‘Revolution Slider’ plugin.

The function create_function is outdated and shall be updated with the latest version.

Simply put – Update the Revolution Slider plugin through CPanel or FTP. It shall mostly solve the problem immediately.

Then you can try to see whether you are able to access the site or not.

Also as suggested perform the manual update to make sure everything is upto date – https://wordpress.org/support/article/updating-wordpress/#manual-update