E_Error Flatsome theme

I have got this error today. Can not login to wordpress using the recovery mode. I only have limited knowledge and am at a loss. Can someone please help!!!

WordPress version 6.0.1
Active theme: Flatsome Child (version 3.0) Current plugin:  (version ) PHP version 8.0.15

Error Details
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An error of type E_ERROR was caused in line 10 of the file /home/uneikcom/public_html/wp-content/themes/flatsome/functions.php. Error message: Uncaught Error: Call to undefined function create_function() in /home/uneikcom/public_html/wp-content/themes/flatsome/functions.php:10
Stack trace:
#0 /home/uneikcom/public_html/wp-settings.php(566): include()
#1 /home/uneikcom/public_html/wp-config.php(103): require_once('/home/uneikcom/...')
#2 /home/uneikcom/public_html/wp-load.php(50): require_once('/home/uneikcom/...')
#3 /home/uneikcom/public_html/wp-admin/admin.php(34): require_once('/home/uneikcom/...')
#4 /home/uneikcom/public_html/wp-admin/index.php(10): require_once('/home/uneikcom/...')
#5 {main}
  thrown

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