Gradle sync failed: Using insecure protocols with repositories, without explicit opt-in, is unsupported. Switch Maven repository

Question

Gradle sync fails every time whenever I open android studio. here is my gradle.build files. Can someone please tell me how to fix this issue? I have gradle 7.2 installed. But I can't figure out what is causing this issue.. I even tried allowInsecureProtocol = true

gradle.build/android

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext {
        buildToolsVersion = "29.0.3"
        minSdkVersion = 21
        compileSdkVersion = 30
        targetSdkVersion = 30
        googlePlayServicesAuthVersion="16.0.1"
    }
    repositories {
        
        google()
        mavenCentral(){
        allowInsecureProtocol = true
    }
        maven{
             url 'https://maven.google.com/'
            name 'Google'
             
        }
    }
    dependencies {
        classpath 'com.google.gms:google-services:4.3.3'
        classpath("com.android.tools.build:gradle:4.2.0")

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
         google()
        mavenCentral(){
        allowInsecureProtocol = true
    }
        mavenLocal()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url("$rootDir/../node_modules/react-native/android")
             
            
        }
        maven {
            // Android JSC is installed from npm
            url("$rootDir/../node_modules/jsc-android/dist")
             
        }

        google()
        mavenCentral(){
        allowInsecureProtocol = true
    }
              
        maven { url 'https://www.jitpack.io' }
        
        
    }
}

gradle.build/app

buildscript {


    
    repositories {
        google()
    mavenCentral(){
        allowInsecureProtocol = true
    }

    
   
    maven { url "https://plugins.gradle.org/m2/" }
    maven { url "http://repo1.maven.org/maven2" }
    maven { url "https://jitpack.io" }

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:7.2'
        classpath 'com.google.gms:google-services:4.3.10'
        
    }
}

allprojects {
    repositories {
        mavenCentral()
        google()
        mavenCentral(){
        allowInsecureProtocol = true
    }
    }
}

apply plugin: 'com.android.library'

def safeExtGet(prop, fallback) {
    rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
}

android {
    compileSdkVersion safeExtGet('compileSdkVersion', 28)
    buildToolsVersion safeExtGet('buildToolsVersion', '28.0.3')

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    defaultConfig {
        minSdkVersion safeExtGet('minSdkVersion', 16)
        targetSdkVersion safeExtGet('targetSdkVersion', 28)
        versionCode 1
        versionName "1.0"
        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    // Use either AndroidX library names or old/support library names based on major version of support lib
    def supportLibVersion = safeExtGet('supportLibVersion', '27.1.1')
    def supportLibMajorVersion = supportLibVersion.split('\\.')[0] as int
    def appCompatLibName =  (supportLibMajorVersion < 20) ? "androidx.appcompat:appcompat" : "com.android.support:appcompat-v7"

    implementation fileTree(dir: 'libs', include: ['*.jar'])
    testImplementation 'junit:junit:4.12'
    implementation "$appCompatLibName:$supportLibVersion"
    implementation 'com.facebook.react:react-native:+'
    implementation 'me.leolin:ShortcutBadger:1.1.22@aar'
    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.0.0'
    implementation "com.google.firebase:firebase-messaging:${safeExtGet('firebaseMessagingVersion', '21.1.0')}"

}

This is the error I get

A problem occurred configuring root project 'RentInCars'.
> Could not resolve all dependencies for configuration ':classpath'.
   > Using insecure protocols with repositories, without explicit opt-in, is unsupported. Switch Maven repository 'BintrayJCenter2(http://jcenter.bintray.com/)' to redirect to a secure protocol (like HTTPS) or allow insecure protocols. See https://docs.gradle.org/7.2/dsl/org.gradle.api.artifacts.repositories.UrlArtifactRepository.html#org.gradle.api.artifacts.repositories.UrlArtifactRepository:allowInsecureProtocol for more details. 

* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Exception is:
org.gradle.api.ProjectConfigurationException: A problem occurred configuring root project 'RentInCars'.
    at org.gradle.configuration.project.LifecycleProjectEvaluator.wrapException(LifecycleProjectEvaluator.java:75)
    at org.gradle.configuration.project.LifecycleProjectEvaluator.addConfigurationFailure(LifecycleProjectEvaluator.java:68)
    at org.gradle.configuration.project.LifecycleProjectEvaluator.access$400(LifecycleProjectEvaluator.java:51)
    at org.gradle.configuration.project.LifecycleProjectEvaluator$EvaluateProject.lambda$run$0(LifecycleProjectEvaluator.java:102)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.lambda$applyToMutableState$0(DefaultProjectStateRegistry.java:325)
    org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:61)
Caused by: org.gradle.api.InvalidUserCodeException: Using insecure protocols with repositories, without explicit opt-in, is unsupported. Switch Maven repository 'BintrayJCenter2(http://jcenter.bintray.com/)' to redirect to a secure protocol (like HTTPS) or allow insecure protocols. See https://docs.gradle.org/7.2/dsl/org.gradle.api.artifacts.repositories.UrlArtifactRepository.html#org.gradle.api.artifacts.repositories.UrlArtifactRepository:allowInsecureProtocol for more details.

settings.gradle

rootProject.name = 'Rent In Cars'

apply from: '../node_modules/react-native-unimodules/gradle.groovy'
includeUnimodulesProjects()

apply from: file("../node_modules/@react-native-community/cli-platform-android/native_modules.gradle");
applyNativeModulesSettingsGradle(settings)

include ':app'

Answer 1

Solution 1: Remove jcenter()

First of all, the jcenter() repository is deprecated now, so try not to use it. Remove all instances of jcenter() and the problem should be solved. Add mavenCentral() as a replacement.

Solution 2: Allow Insecure Protocol for jcenter()

Everywhere you have mentioned jcenter(), expand it like this:

Groovy DSL:

jcenter() {
  allowInsecureProtocol = true
}

Kotlin DSL:

jcenter() {
  isAllowInsecureProtocol = true
}