I’m getting this error often in the logs for a few feeds, is it safe to ignore?
The error means that either something is wrong with your network or with the server of the podcast host. It won’t break anything but it should still be fixed, I think 
If you provide some more details (eg the things displayed when tapping the log entry), I can have a look. Does it usually happen with specific WiFi networks? Does it always happen with the same podcast?