Maybe you can load the old harmony py file as a custom module, then at least you have a working setup again…
But then upgrade your hub first to 210, development release, that one is still using the old API…
I am on 210, but using websockets though now 
It’s within 24 hours, not sure on the exact time. I have a total of four hubs, oddly two of them seem to be working currently without any issues. The other two are unavailable, even on a restart this morning.