Facing Unknown error while trying to hit start a stream through talks streams

Hello I am trying to use talks stream api and in which I successfully created a stream and moved ahead for the next step to start a stream but after passing all the parameters like id, session id and sdp when I hit the api and it's showing Error :
{
"kind": "UnknownError",
"description": "Internal Server Error"
}

I have ensured two to three times that I am passing correct parameters without missing anything as well as I am hitting the api before 2 minutes so there's no issue of session id being timed out. Please assist me regarding this.

Thanks.