Another NoneType object regarding orderbook

[emperorbullz]

Hi Tyler!

Found this one bug about calling the non-existent order book:

I am using the version 1.1.0. It's on the bot.py

Thank you

[Tyler Simpson]

Pushed a possible fix, we will have to wait and see if it works :) thank you for reporting this!

[Ed Coppen]

This one should be being caught with an exception now, probably needs more logging to diagnose similar to #11

[Ed Coppen]

Please reopen if you experience again, log should record the information needed to fix :)