Getting 'AttributeError' Exception Thrown

[canada4663]

I am getting uncaught AttributeError thrown at the line below:

Zappa/zappa/handler.py

Line 309 in 3ccf749

except ValueError:

It seems that the code is designed to catch exceptions where the 'command' key doesn't exist, however, if the message doesn't included an object with the get method and is only a 'str' then this fails.

[canada4663]

Related #1466

I believe that this code will fail whenever there isn't a object with get method in the 'Message' key of the event.