Android Question Please help: Hotspot for Android error in my java code

Sub Class_Globals
    Public rp As RuntimePermissions
    Private WifiManager As JavaObject
    Private Callback As JavaObject
    Public HotspotReservation As JavaObject
End Sub

'Initializes the object. You can add parameters to this method if needed.
Public Sub Initialize
    Dim ctxt As JavaObject
    ctxt.InitializeContext
    WifiManager = ctxt.RunMethod("getSystemService", Array("wifi"))
    Callback.InitializeNewInstance(Application.PackageName & ".clsHotspotOreo$MyHotspotCallback", Null)
End Sub

Public Sub StartHotspot
    WifiManager.RunMethod("startLocalOnlyHotspot", Array(Callback, Null))
    Wait For Hotspot_Started (Success As Boolean, Reservation As Object)
    If Success Then
        HotspotReservation = Reservation
    End If
    CallSub(Main, "StateChanged")
End Sub

Public Sub StopHotspot
    If HotspotReservation.IsInitialized Then
        HotspotReservation.RunMethod("close", Null)
        Dim HotspotReservation As JavaObject
    End If
    CallSub(Main, "StateChanged")
End Sub

#if Java
import android.net.wifi.*;

public static class MyHotspotCallback extends WifiManager.LocalOnlyHotspotCallback {
  @Override
  public void onFailed(int reason) {
        BA.Log("failed: " + reason);
        clsHotspotOreo.processBA.raiseEventFromUI(this, "hotspot_started", false, null);   
    }
    
  @Override
  public void onStopped() {
         BA.Log("OnStopped");
     }
    
  @Override
  public void onStarted(WifiManager.LocalOnlyHotspotReservation reservation) {
       BA.Log("onStarted");
       clsHotspotOreo.processBA.raiseEventFromUI(this, "hotspot_started", true, reservation);
  }
}
#End If

Dim OreoHotspot As clsHotspotOreo
OreoHotspot.Initialize