connect new google map api key to cakephp

I have a cakephp project that uses an address to find the lat/long coordinates using a google map API. This function has been working correctly for years What has happened is that the google account/email has changed recently A new project and google map API key was created in google cloud platform along with billing information. The key isn’t working as I get no output or error message. I have Jquery code to find the lat/long, the view file with an html button call and the API key in the layout file. This code with the old key was working for years I need 1) To make the google map API call work with the code given so you don’t need to create much or anything as its some sort of setup issue