FlutterFire Crashlytics error: A problem occurred configuring project ':app' - firebase

Question

I am studying Firebase, and I recently added Analytics to my app, successfully. I heard about Crashlytics and decided to implement it too, however, even following all the necessary steps I ended up having an error in the build.gradle file, and I don't know what it can be. he error log:
FAILURE: Build failed with an exception.
* Where:
Build file 'C: \ Users \ ... \ ... \ ... \ MyProject \ android \ build.gradle' line: 28
* What went wrong:
A problem occurred evaluating root project 'android'.
> A problem occurred configuring project ': app'.
> Failed to notify project evaluation listener.
> org.gradle.api.GradleException: Crashlytics could not determine stripped / unstripped native library directories for project ': app', variant Release. These are required for generating symbol files when NDK build tasks cannot be automatically inferred. Please specify strippedNativeLibsDir and unstrippedNativeLibsDir in the firebaseCrashlytics extension.
> KotlinJvmAndroidCompilation with name 'release' not found.
* 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.
The error happens in the project level build.gradle file. This is the build.gradle file:
buildscript {
ext.kotlin_version = '1.3.50'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.0'
classpath 'com.google.gms:google-services:4.3.4'
classpath 'com.google.firebase:firebase-crashlytics-gradle:2.3.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app') // The error happens here
}
task clean(type: Delete) {
delete rootProject.buildDir
}
App level build.gradle:
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply plugin: 'com.google.firebase.crashlytics'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 28
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
applicationId "com.example.MyProject"
minSdkVersion 16
targetSdkVersion 28
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}
buildTypes {
release {
signingConfig signingConfigs.debug
firebaseCrashlytics {
nativeSymbolUploadEnabled true
}
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation platform('com.google.firebase:firebase-bom:25.12.0')
implementation 'com.google.firebase:firebase-crashlytics'
implementation 'com.google.firebase:firebase-crashlytics:17.0.0-beta01'
}