The mavsdk server does not initialize the connection to the remote system

Hello, I am developing an application(something like QGC) for drone remote control on Kotlin

When I start MAVSDK server, he stops at “Waiting to discover system on udp://192.168.144.12:19856…” and then nothing happens.
The remote control connects to the drone via udp via airunit

I don’t understand what is wrong, please help
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