Testrpc error: 'no loggers could be found for logger 'jsonrpc.manager'

Question

I'm trying to run truffle init and get the sample contract running. I run truffle init, truffle compile, & truffle migrate. In a separate terminal window (same directory as the project), I run testrpc with no errors-- I get the 10 hashes I'm supposed to get.

In testrpc, this is the output when I run truffle migrate:

Listening on localhost:8545 127.0.0.1 - - [2016-12-07 20:44:14] "POST / HTTP/1.1" 200 718 0.001816 
No handlers could be found for logger "jsonrpc.manager".

Could there be other network connections interfering? I currently don't have any others running that I know of. On a Mac, 10.12.1.

Answer 1

to /bin/testrpc or /usr/local/bin/testrpc (wherever you have testrpc installed) add the following lines:

import logging

logging.basicConfig()

This will give you actual logging output and show you what you need to fix. In my case, it was a gas-related error.