Hi @john
The get_field
function is part of the ACF plugin. Without ACF activated, this function does not exist and any use of it would cause a PHP error.
This is becuase you cannot use a function that does not exist.
If your theme relies on the ACF plugin and get_field
function, you will not be able to deactivate ACF without first removing all ACF code from the the theme.
Please contact the theme developers for help with this.
Thanks
E