Getting Unhandled Exception: [cloud_firestore/permission-denied]. I have checked everything was fine in firebase - flutter

Question

Hello Guys I had created the flutter application in which when a user pressed signup button then they will be checked that provided email exists in the firestore database or not if no then they will be move to next screen. I am getting this [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: [cloud_firestore/permission-denied] The caller does not have permission to execute the specified operation. exception even everything looks fine in my code and firestore configuration
Here is my firestore database rules:
rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write: if request.auth != null;
}
}
}
Here is my project level build.gradle:
buildscript {
ext.kotlin_version = '1.6.10'
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:7.1.2'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.google.gms:google-services:4.3.13'
}
}
allprojects {
repositories {
google()
mavenCentral()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
Here is my app-level build.gradle
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion flutter.compileSdkVersion
ndkVersion flutter.ndkVersion
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.recipedia.fyp.recipedia"
// You can update the following values to match your application needs.
// For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
minSdkVersion 21
targetSdkVersion flutter.targetSdkVersion
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
implementation platform('com.google.firebase:firebase-bom:31.0.3')
}
Here is my signup code:
onPressed: () async {
if (nameTextController.text.isEmpty) {
displayToastMessage(
"Please enter name", context);
} else if (nameTextController.text.length < 3) {
displayToastMessage("Name must be atleast 3 characters", context);
} else if (nameTextController.text.contains(RegExp(r'[0-9]'))) {
displayToastMessage("Numbers and special characters cannot be included", context);
} else if (emailTextController.text.isEmpty) {
displayToastMessage("Please enter email", context);
} else if (!emailTextController.text.contains('#')) {
displayToastMessage("Please enter a valid email", context);
} else if (passwordTextController.text.isEmpty) {
displayToastMessage("Please enter password", context);
} else if (passwordTextController.text.length < 6) {
displayToastMessage("Password must be at-least 6 Characters", context);
} else {
print('Before emailExists');
emailExists = await UserModel().checkIfEmailExists(email);
print('Email exist: $emailExists');
if (emailExists == true) {
snackBar(context, 'Email is already registered');
} else {
/*Move to next screen*/
}
}
}
User Model class checkIfEmailExist function
Future<bool> checkIfEmailExists(String email) async {
try {
var collectionReference = FirebaseFirestore.instance.collection('users');
var doc = await collectionReference.doc(email).get();
return doc.exists;
} catch (e) {
rethrow;
}
}

Answer 1

Solution: In Firestore database rule:
rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write: if true;
}
}
}