Google requires you set up an API key for google maps, right now you don’t have a key set – http://take.ms/CfoJY
If you go to Event Espresso -> Venues -> Google maps you’ll see a section to add an API key, under that is a link that will take you directly to the Google page you need to sign into.
Create a new API for this site and set it in the field and your maps should work.
Lorenzo wrote up some instructions in another post here which may help:
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