Please see the response I received below.
In this case there is clearly a glitch in the custom theme code, or that of one of the plugins on the website that is causing a memory overflow.
In fact the theme’s own tool mentions that their memory requirement is 128MB. If they now say that they require 1024MB, then there is certainly something wrong in their code.
The error 500 seems to stop whenever we deactivate the X Store Core plugin
It will be good if the theme team there takes a look at these error messages and what code lies on the exact lines shown by the error:
Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 20480 bytes) in /wordpress/core/6.0/wp-includes/functions.php on line 4801
Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 32768 bytes) in phar:///usr/local/bin/wp-cli/vendor/wp-cli/php-cli-tools/lib/cli/Colors.php on line 1
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.