Apple increased security features with the release of OS newer versions. To avoid technical issues during your test session, you must enable location services on Security & Privacy. Follow the instruction below or read more through the link:

1- Start by clicking the Apple symbol in the upper left-hand corner followed by System Preferences:
2- Then click Security & Privacy:
3- Then click the Privacy tab:
4- Click on the padlock in the bottom left-hand corner of the window. You will be asked to authenticate by entering your computer ID/password. Once entered, you will then be able to adjust your Location Services by checking the box next to Enable Location Services and ensuring location services are enabled specifically for Google Chrome:
5- Click the lock again once done.