Access Google Map Error http://g.co/dev/maps-no-account

 Problem: "error_message": "You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account"

Solution: It works for me 100%
1. Check your bill payment account with master card or visa card
- https://console.cloud.google.com/
- https://console.developers.google.com/apis/

try check to enable API like Place API, Geocoding...

2. It some change like
https://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,
+Mountain+View,+CA&key=YOUR_API_KEY

example: https://maps.googleapis.com/maps/api/geocode/json?latlng=lat_number,lng_number&sensor=false&key=your_api_key

Please read Google document step by step on what u do OK?