Local install does not start, PDO Exception
You are using multi-environment configs improperly.

You must have an environment with the * key. This is how Craft knows that you are using a multi-environment config. Even if the value is simply an empty array, it must exist.


  The '*' array is required to enable Craft’s multi-environment config support, even if you don’t need it. Craft specifically checks for it when deciding whether to enable multi-environment config support or not.


And this is a bit of speculation... but I'd highly recommend having your * environment as the first item in the array. I'm not sure if it makes a difference to Craft, but it's at least a bit of a standard.