Not able to view streaming from webcam on my website

I am trying to test the streaming plugin by streaming my webcam with the help of gstreamer to the Janus server, I checked with wireshark, there are rtp packets getting sent to the janus server but I am not able to view the streaming in my browser. My console receives the error : No valid JSEP provided.

I am new to this and have very little idea about how everything works. Can someone please help me with this ?
I am keeping it short, I will provide more details as needed. Thanks in advance !

“No valid JSEP received” means the SDP is broken, and so the WebRTC PeerConnection was never established. You should look into that.