From the logs, it looks like the source provides RTSP options that are non-standard (vendor-specific) and does not provide the standard ones. It seems that the RTSP response headers for RTSP OPTIONS request sent by the source is something like this:
Evostream Media Server expects the standard ones, specifically a RTSP header like this:
Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE
Is this the same source stream as you’ve mentioned below or the correct logs? The source uri you’ve provided earlier is RTMP and the logs says it is RTSP.
Regards,
Ian