gradle error in android studio while runnig flutter app - android-studio

Question

I'm trying to authenticate my login page activity with firebase. so, while doing that I got this Gradle error.
I refer to the below link but nothing works for me.
flutter: getting gradle error while running my flutter app for the first time
In project/android/app/build.Gradle, the GradleException is highlighted in red.
build.gradle file:
buildscript {
ext.kotlin_version = '1.3.50'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.google.gms:google-services:4.3.3'
classpath 'com.android.tools.build:gradle:4.0.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
In Console, the error is:
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:stripDebugDebugSymbols'.
> No version of NDK matched the requested version 21.0.6113669. Versions available locally: 20.1.5948944
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 1m 40s
Exception: Gradle task assembleDebug failed with exit code 1
help me out of this problem.

Answer 1

You have to configure your NDK through Project settings -> SDK Location -> Android NDK location.
If you don't have an NDK, then you need to go to Tools -> SDK Manager -> SDK Tools Tab, then select NDK (side by side) and install it.