Java.lang.IllegalArgumentException: Too many NetworkRequests filed

String activeInterface = "";
int switchInterface = 0;
ConnectivityManager cm;
 
public boolean switchInterface() {
    cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = cm.getNetworkInfo(cm.TYPE_WIFI);
    boolean isWifiConn = networkInfo.isConnectedOrConnecting();
    networkInfo = cm.getNetworkInfo(cm.TYPE_MOBILE);
    boolean isMobileConn = networkInfo.isConnectedOrConnecting();
 
    if (isWifiConn == false || isMobileConn == false) {
        setToast("Ошибка! Проверьте наличие соединения с интернетом по обоим интерфейса Wifi или Mobile.");
        return false;
    }
 
    NetworkRequest.Builder request = new NetworkRequest.Builder();
 
    if (switchInterface == 0) {
        activeInterface = "mobile";
        request.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
        request.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
        switchInterface = 1;
    } else {
        activeInterface = "wifi";
        request.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
        request.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
        switchInterface = 0;
    }
 
    //try {
        cm.requestNetwork(request.build(), new ConnectivityManager.NetworkCallback() {
            @Override
            public void onAvailable(Network network) {
                cm.bindProcessToNetwork(network);
                //SystemClock.sleep(200);
                //cm.unregisterNetworkCallback(this);
            }
        });
    //} catch (Exception e) {
        //setToast("err");
    //}
    return true;
}