no valid found h264 payload type

[Alijaaan]

Dear Creator,

Thanks for your answer in advance.
I tried so much and I found something.
When I'm using flutter-web. everything is ok in rtc mode.
Peer Connection is ok and I can publish and play in both side.
But when I'm trying on emulator or real device I receive this error :
no valid found h264 payload type in my srs server.
and I don't receive answer for connection.
Don I have to do something in device?
I passed all permissions in AndroidManifest already.