[Appointments+] Fatal Error when Locations add-on is enabled

When I enable “Service Locations” add-on in Appointments+, the “Services” tab in Appointments settings goes blank. The same happens to the “Service Providers” add-on when the “Worker Locations” add-on is enabled. We tried a full plugin/theme conflict test. It didn’t help.

Debug.log shows the following error message: PHP Fatal error: Uncaught Error: Call to a member function get_map() on null in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/appointments/includes/pro/includes/addons/lib/app_locations.php:333 (full debug log has been attached in the chat transcript). Please advice.