Can't access backend nor frontend after upgrade...
That's what i can see:

> Magento supports PHP 5.6, 7.0.2, and 7.0.6 or later. Please read
> Magento System Requirements.

Got it already running with PHP 7.0.6

Tried:

    php bin/magento setup:upgrade 

Which gives me:

    [Magento\Framework\Exception\LocalizedException]  
    Area code is already set