When does the access token [access_token: [a different long URL safe random string]] get used? I never seem to put it anywhere…of course my installation isn’t working either 
It’s handled internally between HA and Google, don’t worry about it.
As for your problem, have you looked through this thread and this one? If they don’t solve your problem then you need to tell us what stage you reached before it went wrong, and what your current problem is 
My project.json file had a typo. Appreciate the help anyway
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