Jitsi Meet Crashes On Android SDK

I am a beginner in Android development, and I am trying to integrate Jitsi Meet into my chatting app. Whenever I accept the call my app crashes on both ends, and I get this log;

    Process: ca.scooter.talkufy, PID: 14956
    java.lang.RuntimeException: Unable to start activity ComponentInfo{ca.scooter.talkufy/org.jitsi.meet.sdk.JitsiMeetActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void org.jitsi.meet.sdk.JitsiMeetView.setListener(java.lang.Object)' on a null object reference
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3449)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void org.jitsi.meet.sdk.JitsiMeetView.setListener(java.lang.Object)' on a null object reference
        at org.jitsi.meet.sdk.JitsiMeetActivity.onCreate(JitsiMeetActivity.java:72)
        at android.app.Activity.performCreate(Activity.java:8000)
        at android.app.Activity.performCreate(Activity.java:7984)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:223) 
        at android.app.ActivityThread.main(ActivityThread.java:7656) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947) 

And here is the page of code of were I think the app crashed;

package ca.scooter.talkufy.jitsi_sdk;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.fragment.app.FragmentActivity;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;

import com.facebook.react.modules.core.PermissionListener;

import org.jitsi.meet.sdk.log.JitsiMeetLogger;

import java.util.HashMap;

import ca.scooter.talkufy.R;

//
//  A base activity for SDK users to embed. It uses {@link JitsiMeetFragment} to do the heavy
//  lifting and wires the remaining Activity lifecycle methods so it works out of the box.

public class JitsiMeetActivity extends FragmentActivity
        implements JitsiMeetActivityInterface {

    protected static final String TAG = org.jitsi.meet.sdk.JitsiMeetActivity.class.getSimpleName();

    private static final String ACTION_JITSI_MEET_CONFERENCE = "org.jitsi.meet.CONFERENCE";
    private static final String JITSI_MEET_CONFERENCE_OPTIONS = "JitsiMeetConferenceOptions";

    private final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            onBroadcastReceived(intent);
        }
    };
    // Helpers for starting the activity
    //


    public static void launch(Context context, JitsiMeetConferenceOptions options) {
        Intent intent = new Intent(context, JitsiMeetActivity.class);
        intent.setAction(ACTION_JITSI_MEET_CONFERENCE);
        intent.putExtra(JITSI_MEET_CONFERENCE_OPTIONS, options);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }

    public static void launch(Context context, String url) {
        JitsiMeetConferenceOptions options
                = new JitsiMeetConferenceOptions.Builder()
                .setRoom(url)
                .build();
        launch(context, options);
    }


    // Overrides
    //

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_jitsi_meet);

        registerForBroadcastMessages();

        if (!extraInitialize()) {
            initialize();
        }
    }

    @Override
    public void onDestroy() {
        // Here we are trying to handle the following corner case: an application using the SDK
        // is using this Activity for displaying meetings, but there is another "main" Activity
        // with other content. If this Activity is "swiped out" from the recent list we will get
        // Activity#onDestroy() called without warning. At this point we can try to leave the
        // current meeting, but when our view is detached from React the JS <-> Native bridge won't
        // be operational so the external API won't be able to notify the native side that the
        // conference terminated. Thus, try our best to clean up.
        leave();
        if (AudioModeModule.useConnectionService()) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                ConnectionService.abortConnections();
            }
        }
        ca.scooter.talkufy.jitsi_sdk.JitsiMeetOngoingConferenceService.abort(this);

        LocalBroadcastManager.getInstance(this).unregisterReceiver(broadcastReceiver);

        super.onDestroy();
    }

    @Override
    public void finish() {
        leave();

        super.finish();
    }

    // Helper methods
    //

    protected JitsiMeetView getJitsiView() {
        JitsiMeetFragment fragment
                = (JitsiMeetFragment) getSupportFragmentManager().findFragmentById(R.id.jitsiFragment);
        return fragment != null ? fragment.getJitsiView() : null;
    }

    public void join(@Nullable String url) {
        JitsiMeetConferenceOptions options
                = new JitsiMeetConferenceOptions.Builder()
                .setRoom("https://meet.jit.si/febjkshjjvxj")
                .build();
        join(options);
    }

    public void join(JitsiMeetConferenceOptions options) {
        JitsiMeetView view = getJitsiView();

        if (view != null) {
            view.join(options);
        } else {
            JitsiMeetLogger.w("Cannot join, view is null");
        }
    }

    public void leave() {
        JitsiMeetView view = getJitsiView();

        if (view != null) {
            view.leave();
        } else {
            JitsiMeetLogger.w("Cannot leave, view is null");
        }
    }

    private @Nullable
    JitsiMeetConferenceOptions getConferenceOptions(Intent intent) {
        String action = intent.getAction();

        if (Intent.ACTION_VIEW.equals(action)) {
            Uri uri = intent.getData();
            if (uri != null) {
                return new JitsiMeetConferenceOptions.Builder().setRoom(uri.toString()).build();
            }
        } else if (ACTION_JITSI_MEET_CONFERENCE.equals(action)) {
            return intent.getParcelableExtra(JITSI_MEET_CONFERENCE_OPTIONS);
        }

        return null;
    }

    /**
     * Helper function called during activity initialization. If {@code true} is returned, the
     * initialization is delayed and the {@link JitsiMeetActivity#initialize()} method is not
     * called. In this case, it's up to the subclass to call the initialize method when ready.
     * <p>
     * This is mainly required so we do some extra initialization in the Jitsi Meet app.
     *
     * @return {@code true} if the initialization will be delayed, {@code false} otherwise.
     */
    protected boolean extraInitialize() {
        return false;
    }

    protected void initialize() {
        // Join the room specified by the URL the app was launched with.
        // Joining without the room option displays the welcome page.
        join(getConferenceOptions(getIntent()));
    }

    protected void onConferenceJoined(HashMap<String, Object> extraData) {
        JitsiMeetLogger.i("Conference joined: " + extraData);
        // Launch the service for the ongoing notification.
        ca.scooter.talkufy.jitsi_sdk.JitsiMeetOngoingConferenceService.launch(this);
    }

    protected void onConferenceTerminated(HashMap<String, Object> extraData) {
        JitsiMeetLogger.i("Conference terminated: " + extraData);
        finish();
    }

    protected void onConferenceWillJoin(HashMap<String, Object> extraData) {
        JitsiMeetLogger.i("Conference will join: " + extraData);
    }

    protected void onParticipantJoined(HashMap<String, Object> extraData) {
        try {
            JitsiMeetLogger.i("Participant joined: ", extraData);
        } catch (Exception e) {
            JitsiMeetLogger.w("Invalid participant joined extraData", e);
        }
    }

    protected void onParticipantLeft(HashMap<String, Object> extraData) {
        try {
            JitsiMeetLogger.i("Participant left: ", extraData);
        } catch (Exception e) {
            JitsiMeetLogger.w("Invalid participant left extraData", e);
        }
    }

    // Activity lifecycle methods
    //

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        JitsiMeetActivityDelegate.onActivityResult(this, requestCode, resultCode, data);
    }

    @Override
    public void onBackPressed() {
        JitsiMeetActivityDelegate.onBackPressed();
    }

    @Override
    public void onNewIntent(Intent intent) {
        super.onNewIntent(intent);

        JitsiMeetConferenceOptions options;

        if ((options = getConferenceOptions(intent)) != null) {
            join(options);
            return;
        }

        JitsiMeetActivityDelegate.onNewIntent(intent);
    }

    @Override
    protected void onUserLeaveHint() {
        JitsiMeetView view = getJitsiView();

        if (view != null) {
            view.enterPictureInPicture();
        }
    }

    // JitsiMeetActivityInterface
    //

    @Override
    public void requestPermissions(String[] permissions, int requestCode, PermissionListener listener) {
        JitsiMeetActivityDelegate.requestPermissions(this, permissions, requestCode, listener);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        JitsiMeetActivityDelegate.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }

    private void registerForBroadcastMessages() {
        IntentFilter intentFilter = new IntentFilter();

        for (BroadcastEvent.Type type : BroadcastEvent.Type.values()) {
            intentFilter.addAction(type.getAction());
        }

        LocalBroadcastManager.getInstance(this).registerReceiver(broadcastReceiver, intentFilter);
    }

    private void onBroadcastReceived(Intent intent) {
        if (intent != null) {
            BroadcastEvent event = new BroadcastEvent(intent);

            switch (event.getType()) {
                case CONFERENCE_JOINED:
                    onConferenceJoined(event.getData());
                    break;
                case CONFERENCE_WILL_JOIN:
                    onConferenceWillJoin(event.getData());
                    break;
                case CONFERENCE_TERMINATED:
                    onConferenceTerminated(event.getData());
                    break;
                case PARTICIPANT_JOINED:
                    onParticipantJoined(event.getData());
                    break;
                case PARTICIPANT_LEFT:
                    onParticipantLeft(event.getData());
                    break;
            }
        }
    }
}

If anyone is able to help me that would be amazing. Thank you.