This android project used Google map feature, So you must change GOOGLE_MAP_API_KEY by yours.
1. Or you can use others API key # After you get the GOOGLE_MAP_API_KEY you can placed you API key at android project res/values/strings.xml
<!-- API KEY FOR MAP --> <string name="GOOGLE_MAP_API_KEY">AIzaSyBiB9CCaRZLfRP4bMZc.........</string>