Hello,

I have checked the console and see this error: You are using this API without a key. And they provide the link with the instruction on how to fix that:
See https://developers.google.com/maps/documentation/javascript/error-messages?utm_source=maps_js&utm_medium=degraded&utm_campaign=billing#api-key-and-billing-errors

If you have any questions please feel free to contact us.

Best Regards