Problem to find session on Android

I have a problem in my project, when I try to find a session (find session of a LAN dedicated server) through windows everything works, but if I try it on android it fails me and gives me this:
Warning: Script Msg: Sessions not supported by Online Subsystem

Settings:

Path: project.Build.cs |
PrivateDependencyModuleNames.Add(“OnlineSubsystem”);

Path: DefaultEngine.ini |
[OnlineSubsystem]
DefaultPlatformService=Null

Can anyone help me? Thank you