Problem displaying Google maps

Hi,

I'm having trouble displaying the Avada Google maps on my contact page and I wonder if the WPMUDEV plugin could be causing the issue? I get this error when I inspect the code on that page (http://wbbsbc.co.za/contact/)

"Uncaught ReferenceError: google is not defined
at (index):303"

I've followed a number of 'solutions' from the Avada forum but none have solved it. I've doubled checked my API key, still nothing.

Not sure what to try next?