So recently Google announced that there will be no more API calls without billing details. This affects everyone that has a Google generate map on their website.
As of this summer any website calls to the Google Maps APIs which don’t include an API key will return an error or a watermarked map.
This means that everyone who has a Google map needs to create an API key from a registered account with payment / credit card details, even if they are never likely to have to pay for the service (due to low usage).
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