Flutter Cant Connect to firebase firestore database

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Launching lib\main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
Parameter format not correct -
✓ Built build\app\outputs\flutter-apk\app-debug.apk.
Installing build\app\outputs\flutter-apk\app.apk...
Waiting for Android SDK built for x86 to report its views...
Debug service listening on ws://127.0.0.1:50523/i2wsZclk56g=/ws
Syncing files to device Android SDK built for x86...
D/EGL_emulation(18666): eglMakeCurrent: 0xe7f04400: ver 2 0 (tinfo 0xdfef9730)
D/eglCodecCommon(18666): setVertexArrayObject: set vao to 0 (0) 1 0
W/DynamiteModule(18666): Local module descriptor class for providerinstaller not found.
I/DynamiteModule(18666): Considering local module providerinstaller:0 and remote module providerinstaller:0
W/ProviderInstaller(18666): Failed to load providerinstaller module: No acceptable module found. Local version is 0 and remote
version is 0.
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->getLong(Ljava/lang/Object;J)J
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->arrayBaseOffset(Ljava/lang/Class;)I
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->copyMemory(JJJ)V (greylist, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->objectFieldOffset(Ljava/lang/reflect/Field;)J
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->getByte(J)B (greylist,core-platform-api, linking,
allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->getByte(Ljava/lang/Object;J)B
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->getLong(J)J (greylist,core-platform-api, linking,
allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->putByte(JB)V (greylist,core-platform-api, linking,
allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->putByte(Ljava/lang/Object;JB)V
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->getLong(Ljava/lang/Object;J)J
(greylist,core-platform-api, reflection, allowed)
W/xample.news_ap(18666): Accessing hidden method Lsun/misc/Unsafe;->getLong(Ljava/lang/Object;J)J
(greylist,core-platform-api, reflection, allowed)
W/xample.news_ap(18666): Accessing hidden field Ljava/nio/Buffer;->address:J (greylist, reflection, allowed)
I/xample.news_ap(18666): The ClassLoaderContext is a special shared library.
I/chatty  (18666): uid=10143(com.example.news_app) AsyncTask #1 identical 1 line
I/xample.news_ap(18666): The ClassLoaderContext is a special shared library.
V/NativeCrypto(18666): Registering com/google/android/gms/org/conscrypt/NativeCrypto's 286 native
methods...
W/xample.news_ap(18666): Accessing hidden method Ljava/security/spec/ECParameterSpec;->getCurveName()Ljava/lang/String;
(greylist, reflection, allowed)
D/NetworkSecurityConfig(18666): No Network Security Config specified, using platform default
I/ProviderInstaller(18666): Installed default security provider GmsCore_OpenSSL
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following NoSuchMethodError was thrown building Home(dirty, state: _HomeState#f839b):
The getter 'length' was called on null.
Receiver: null
Tried calling: length
The relevant error-causing widget was:
  Home file:///E:/major%20project/newssapp/news_app/lib/main.dart:17:15
When the exception was thrown, this was the stack:
#0      Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
#1      _HomeState.build (package:news_app/home.dart:151:44)
#2      StatefulElement.build (package:flutter/src/widgets/framework.dart:4663:28)
#3      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4546:15)
#4      StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4719:11)
#5      Element.rebuild (package:flutter/src/widgets/framework.dart:4262:5)
#6      ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4525:5)
#7      StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4710:11)
#8      ComponentElement.mount (package:flutter/src/widgets/framework.dart:4520:5)
...     Normal element mounting (132 frames)
#140    Element.inflateWidget (package:flutter/src/widgets/framework.dart:3490:14)
#141    MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5991:32)
...     Normal element mounting (267 frames)
#408    Element.inflateWidget (package:flutter/src/widgets/framework.dart:3490:14)
#409    Element.updateChild (package:flutter/src/widgets/framework.dart:3258:18)
#410    RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1174:16)
#411    RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:1145:5)
#412    RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:1087:17)
#413    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2620:19)
#414    RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:1086:13)
#415    WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:927:7)
#416    WidgetsBinding.scheduleAttachRootWidget.<anonymous closure> (package:flutter/src/widgets/binding.dart:908:7)
(elided 11 frames from class _RawReceivePortImpl, class _Timer, dart:async, and dart:async-patch)
════════════════════════════════════════════════════════════════════════════════════════════════════
W/xample.news_ap(18666): Accessing hidden field Ljava/net/Socket;->impl:Ljava/net/SocketImpl; (greylist, reflection,
allowed)
W/xample.news_ap(18666): Accessing hidden method Ldalvik/system/CloseGuard;->get()Ldalvik/system/CloseGuard;
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Ldalvik/system/CloseGuard;->open(Ljava/lang/String;)V
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden field Ljava/io/FileDescriptor;->descriptor:I (greylist, JNI, allowed)
W/xample.news_ap(18666): Accessing hidden method Ljava/security/spec/ECParameterSpec;->setCurveName(Ljava/lang/String;)V
(greylist, reflection, allowed)
W/xample.news_ap(18666): Accessing hidden method Ldalvik/system/BlockGuard;->getThreadPolicy()Ldalvik/system/BlockGuard$Policy;
(greylist,core-platform-api, linking, allowed)
W/xample.news_ap(18666): Accessing hidden method Ldalvik/system/BlockGuard$Policy;->onNetwork()V (greylist, linking,
allowed)
W/Firestore(18666): (21.4.3) [OnlineStateTracker]: Could not reach Cloud Firestore backend. Connection failed 1 times. Most recent error:
Status{code=NOT_FOUND, description=The project newsapp-aa434 does not
exist or it does not contain an active Cloud Datastore or Cloud
Firestore database. Please visit http://console.cloud.google.com to
create a project or
https://console.cloud.google.com/datastore/setup?project=newsapp-aa434
to add a Cloud Datastore or Cloud Firestore database. Note that Cloud
Datastore or Cloud Firestore always have an associated App Engine app
and this app must not be disabled., cause=null}
W/Firestore(18666): This typically indicates that your device does not have a healthy Internet connection at the moment. The client will
operate in offline mode until it is able to successfully connect to
the backend.
════════ Exception caught by widgets library ═══════════════════════════════════════════════════════
The following NoSuchMethodError was thrown building Home(dirty, state: _HomeState#f839b):
The getter 'length' was called on null.
Receiver: null
Tried calling: length
The relevant error-causing widget was: 
  Home file:///E:/major%20project/newssapp/news_app/lib/main.dart:17:15
When the exception was thrown, this was the stack: 
#0      Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
#1      _HomeState.build (package:news_app/home.dart:151:44)
#2      StatefulElement.bu``ild (package:flutter/src/widgets/framework.dart:4663:28)
#3      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4546:15)
#4      StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4719:11)
════════════════════════════════════════════════════════════════════════════════════════════════════
                You seem to have just posted your error. Please see How do I ask a good question?. Using a code block around your error would have made it a bit more readable.
– Scratte
                Sep 12, 2020 at 21:05
If you are using the latest Firebase dependencies then you have to add the Firebase Core to your dependencies in pubspec.yaml;
firebase_core: "0.5.0"
After integrating the Core dependency you have to initialize Firebase in your app to access it's features such Firestore;
void main() {
     runApp(MyApp());
class MyApp extends StatelessWidget {
  final Future<FirebaseApp> _initialization = Firebase.initializeApp();
  @override
  Widget build(BuildContext context) {
    return FutureBuilder(
      // Initialize Firebase:
      future: _initialization,
      builder: (context, snapshot) {
        if (snapshot.connectionState == ConnectionState.done) {
          return YourApplication();
The necessary documents for the installation and usage of Firebase tools in Flutter can be found in FlutterFire page.
Alternatively, If you are sure about your dependencies, you can run in your terminal the following command;
flutter pub get
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