In AdvancedCustomFields.php the __get functions returns the get() method of the result of FieldFactory::make, but when the custom field not exists for a particuler post, the result of the FieldFactory will be null. So an exception will be thrown.
Better to change the return of the __get() method to:
In AdvancedCustomFields.php the __get functions returns the get() method of the result of FieldFactory::make, but when the custom field not exists for a particuler post, the result of the FieldFactory will be null. So an exception will be thrown.
Better to change the return of the __get() method to: