Мое приложение chatbot перестало работать после того, как я отправил приветственное сообщение и не ответил

Question

Я нуб !! Я сделал android чат-бот с диалоговым потоком, но приложение перестает работать после того, как я вхожу в hello, и не отвечает

MainActivity. java

    package com.tyagiabhinav.dialogflowchat;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.api.gax.core.FixedCredentialsProvider;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.cloud.dialogflow.v2beta1.DetectIntentResponse;
import com.google.cloud.dialogflow.v2beta1.QueryInput;
import com.google.cloud.dialogflow.v2beta1.SessionName;
import com.google.cloud.dialogflow.v2beta1.SessionsClient;
import com.google.cloud.dialogflow.v2beta1.SessionsSettings;
import com.google.cloud.dialogflow.v2beta1.TextInput;

import java.io.InputStream;
import java.util.UUID;

import ai.api.AIServiceContext;
import ai.api.AIServiceContextBuilder;
import ai.api.android.AIConfiguration;
import ai.api.android.AIDataService;
import ai.api.model.AIRequest;
import ai.api.model.AIResponse;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = MainActivity.class.getSimpleName();
    private static final int USER = 10001;
    private static final int BOT = 10002;

    private String uuid = UUID.randomUUID().toString();
    private LinearLayout chatLayout;
    private EditText queryEditText;

    // Android client
    private AIRequest aiRequest;
    private AIDataService aiDataService;
    private AIServiceContext customAIServiceContext;

    // Java V2
    private SessionsClient sessionsClient;
    private SessionName session;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final ScrollView scrollview = findViewById(R.id.chatScrollView);
        scrollview.post(() -> scrollview.fullScroll(ScrollView.FOCUS_DOWN));

        chatLayout = findViewById(R.id.chatLayout);

        ImageView sendBtn = findViewById(R.id.sendBtn);
        sendBtn.setOnClickListener(this::sendMessage);

        queryEditText = findViewById(R.id.queryEditText);
        queryEditText.setOnKeyListener((view, keyCode, event) -> {
            if (event.getAction() == KeyEvent.ACTION_DOWN) {
                switch (keyCode) {
                    case KeyEvent.KEYCODE_DPAD_CENTER:
                    case KeyEvent.KEYCODE_ENTER:
                        sendMessage(sendBtn);
                        return true;
                    default:
                        break;
                }
            }
            return false;
        });

        // Android client
        initChatbot();

        // Java V2
        initV2Chatbot();
    }

    private void initChatbot() {
        final AIConfiguration config = new AIConfiguration(BuildConfig.ClientAccessToken,
                AIConfiguration.SupportedLanguages.English,
                AIConfiguration.RecognitionEngine.System);
        aiDataService = new AIDataService(this, config);
        customAIServiceContext = AIServiceContextBuilder.buildFromSessionId(uuid);// helps to create new session whenever app restarts
        aiRequest = new AIRequest();
    }

    private void initV2Chatbot() {
        try {
            InputStream stream = getResources().openRawResource(R.raw.smalltalkdaiaxs981db5c2e2a8);
            GoogleCredentials credentials = GoogleCredentials.fromStream(stream);
            String projectId = ((ServiceAccountCredentials)credentials).getProjectId();

            SessionsSettings.Builder settingsBuilder = SessionsSettings.newBuilder();
            SessionsSettings sessionsSettings = settingsBuilder.setCredentialsProvider(FixedCredentialsProvider.create(credentials)).build();
            sessionsClient = SessionsClient.create(sessionsSettings);
            session = SessionName.of(projectId, uuid);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void sendMessage(View view) {
        String msg = queryEditText.getText().toString();
        if (msg.trim().isEmpty()) {
            Toast.makeText(MainActivity.this, "Please enter your query!", Toast.LENGTH_LONG).show();
        } else {
            showTextView(msg, USER);
            queryEditText.setText("");
            // Android client
          aiRequest.setQuery(msg);
          RequestTask requestTask = new RequestTask(MainActivity.this, aiDataService, customAIServiceContext);
           requestTask.execute(aiRequest);

            // Java V2
            QueryInput queryInput = QueryInput.newBuilder().setText(TextInput.newBuilder().setText(msg).setLanguageCode("en-US")).build();
            new RequestJavaV2Task(MainActivity.this, session, sessionsClient, queryInput).execute();
        }
    }

    public void callback(AIResponse aiResponse) {
        if (aiResponse != null) {
            // process aiResponse here
            String botReply = aiResponse.getResult().getFulfillment().getSpeech();
            Log.d(TAG, "Bot Reply: " + botReply);
            showTextView(botReply, BOT);
        } else {
            Log.d(TAG, "Bot Reply: Null");
            showTextView("There was some communication issue. Please Try again!", BOT);
        }
    }

    public void callbackV2(DetectIntentResponse response) {
        if (response != null) {
            // process aiResponse here
            String botReply = response.getQueryResult().getFulfillmentText();
            Log.d(TAG, "V2 Bot Reply: " + botReply);
            showTextView(botReply, BOT);
        } else {
            Log.d(TAG, "Bot Reply: Null");
            showTextView("There was some communication issue. Please Try again!", BOT);
        }
    }

    private void showTextView(String message, int type) {
        FrameLayout layout;
        switch (type) {
            case USER:
                layout = getUserLayout();
                break;
            case BOT:
                layout = getBotLayout();
                break;
            default:
                layout = getBotLayout();
                break;
        }
        layout.setFocusableInTouchMode(true);
        chatLayout.addView(layout); // move focus to text view to automatically make it scroll up if softfocus
        TextView tv = layout.findViewById(R.id.chatMsg);
        tv.setText(message);
        layout.requestFocus();
        queryEditText.requestFocus(); // change focus back to edit text to continue typing
    }

    FrameLayout getUserLayout() {
        LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
        return (FrameLayout) inflater.inflate(R.layout.user_msg_layout, null);
    }

    FrameLayout getBotLayout() {
        LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
        return (FrameLayout) inflater.inflate(R.layout.bot_msg_layout, null);
    }
}

В файлах журнала коллизии пожарной базы сказано, что это получил приветственный запрос, но я не мог найти причину закрытия приложения, не возвращая никакого ответа.

Если вам нужен build.gradle или запрос java файлов, дайте мне знать.

Кто-то, пожалуйста, помогите.