Enhance error logging
Enhance error logging

- Prevent to fall into error logging recursion when it doesn't have
request info (Print 'Unknown' when the request is still `None`
- Print repr(e) rather than str(e)

jrocketfingers/sanic,lixxu/sanic,ai0/sanic,ashleysommer/sanic,lixxu/sanic,yunstanford/sanic,lixxu/sanic,channelcat/sanic,lixxu/sanic,yunstanford/sanic,ashleysommer/sanic,Tim-Erwin/sanic,r0fls/sanic,r0fls/sanic,channelcat/sanic,ashleysommer/sanic,Tim-Erwin/sanic,ai0/sanic,yunstanford/sanic,yunstanford/sanic,jrocketfingers/sanic,channelcat/sanic,channelcat/sanic