Couldn't start streaming

--- ServiceManager: Request
POST https://api.heygen.com/v1/streaming.start
Headers:
Content-Type: application/json
Accept: application/json
x-api-key: ZjU3NzRjYjM5M2NjNGJiZmFiNWE0NmQ3MmZhYjRhNWItMTcxMDkwNzk0Mw==
Body:
{
"sdp" : {
"type" : "answer",
"sdp" : "v=0\r\no=- 1891831427269633215 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0 1 2\r\na=extmap-allow-mixed\r\na=msid-semantic: WMS pion\r\nm=video 9 UDP/TLS/RTP/SAVPF 96\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:h9W6\r\na=ice-pwd:8GddK72kWxJtF2Z5Mhf9k1Rt\r\na=ice-options:trickle renomination\r\na=fingerprint:sha-256 A5:0F:29:0E:02:C7:15:3B:F7:72:87:30:87:7B:83:1E:43:A5:54:80:88:58:EB:EF:03:F5:30:6A:D7:D0:7A:83\r\na=setup:active\r\na=mid:0\r\na=recvonly\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=rtpmap:96 VP8/90000\r\na=ssrc:1135250575 cname:J+Cph4BCs1aoNrUQ\r\na=ssrc:1135250575 msid:pion video\r\na=ssrc:1135250575 mslabel:pion\r\na=ssrc:1135250575 label:video\r\nm=audio 9 UDP/TLS/RTP/SAVPF 111\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:h9W6\r\na=ice-pwd:8GddK72kWxJtF2Z5Mhf9k1Rt\r\na=ice-options:trickle renomination\r\na=fingerprint:sha-256 A5:0F:29:0E:02:C7:15:3B:F7:72:87:30:87:7B:83:1E:43:A5:54:80:88:58:EB:EF:03:F5:30:6A:D7:D0:7A:83\r\na=setup:active\r\na=mid:1\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:111 opus/48000/2\r\na=fmtp:111 minptime=10;useinbandfec=1\r\na=ssrc:102127718 cname:J+Cph4BCs1aoNrUQ\r\na=ssrc:102127718 msid:pion audio\r\na=ssrc:102127718 mslabel:pion\r\na=ssrc:102127718 label:audio\r\nm=application 9 UDP/DTLS/SCTP webrtc-datachannel\r\nc=IN IP4 0.0.0.0\r\na=ice-ufrag:h9W6\r\na=ice-pwd:8GddK72kWxJtF2Z5Mhf9k1Rt\r\na=ice-options:trickle renomination\r\na=fingerprint:sha-256 A5:0F:29:0E:02:C7:15:3B:F7:72:87:30:87:7B:83:1E:43:A5:54:80:88:58:EB:EF:03:F5:30:6A:D7:D0:7A:83\r\na=setup:active\r\na=mid:2\r\na=sctp-port:5000\r\n"
},
"session_id" : "a5b3da13-f1e2-11ee-aa3d-8aaf6ccda56f"
}

--- ServiceManager: Response
https://api.heygen.com/v1/streaming.start
400 bad request
Headers:
Server: gunicorn
Date: Wed, 03 Apr 2024 17:52:59 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 54
Body:
{
"message" : "session state wrong: closed",
"code" : 10005
}