Not sure if you need much more, but attempting to watch a locast stream produces log entries like:
2020/10/30 13:26:25.132201 [ERR] Failed to start stream for ch5903: Locast: invalid character 'C' looking for beginning of value
2020/10/30 13:26:25.140499 [HLS] Couldn't generate stream playlist for ch5903-dANY-ip192.168.2.5: Locast: invalid character 'C' looking for beginning of value
2020/10/30 13:26:25.140561 [HLS] Stopping transcoder session ch5903-dANY-ip192.168.2.5
If you need fuller logs, let me know.