Upgraded Channels to 3.1.9 on my ATV4K running iOS11.3b4
Have not tested all the API commands, but the /api/favorite_channels seems to hang.
BASH SCRIPT
#!/bin/bash
chan=$1
curl -v -l http://living-room:57000/api/favorite_channels
RESPONSE (never returns an error, timeout, or returns to a prompt)
* Trying 192.168.69.121...
* Connected to living-room (192.168.69.121) port 57000 (#0)
> GET /api/favorite_channels HTTP/1.1
> Host: living-room:57000
> User-Agent: curl/7.47.0
> Accept: */*