Looks like you are getting a network error trying to connect to your tuner:
Apr 16, 2018 19:29:06.839 [0x7fd5eb3ff700] ERROR - [Transcoder] http://192.168.1.31:5004/auto/v4.1: No route to host
Have you looked at the device log to see if there are any messages around the 19:29 time frame? Should be able to access the log using: http://192.168.1.31/log.html.
