Any Google Maps from any GM plugin would not get rendered in any WP-tabs-plugin due to the missing code in functions.php.
The problem (2):
On trying to edit and add the required code line to the GeneratePress Child Theme’s functions.php I am referred to the higher-level parent theme’s functions.php.
However editing this file’s code is well beyond my skills.
Therefore I am asking your help or advice in making Google Maps work inside Tabs and Modals in GeneratePress.