title: Flutter run returns: A problem occurred evaluating project ':app'." ">ASCII"
body: <p>I'm trying to follow the "Add firebase to flutter" tutorial (<a href="https://firebase.google.com/docs/flutter/setup" rel="nofollow noreferrer">https://firebase.google.com/docs/flutter/setup</a>) . I've done this with many prior version.</p>
  
  <p>Now on Flutter 1.9 I'm getting "A problem occurred evaluating project ':app'." ">ASCII". Is this a known issue?</p>
  
  <p>Flutter doctor:</p>
  
  <pre><code>PS C:\DEV\auth&gt; flutter doctor -v
  
  [√] Android Studio (version 3.2)
      • Android Studio at C:\Program Files\Android\Android Studio
      • Flutter plugin version 31.3.1
      • Dart plugin version 181.5656
      • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
  
  [√] VS Code, 64-bit edition (version 1.39.1)
      • VS Code at C:\Program Files\Microsoft VS Code
      • Flutter extension version 3.5.1
  
  [√] Connected device (1 available)
      • Android SDK built for x86 • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)
  
  • No issues found!
  </code></pre>
  
  <p>build.gradle</p>
  
  <pre><code>buildscript {
      repositories {
          google()
          jcenter()
      }
  
      dependencies {
          classpath 'com.android.tools.build:gradle:3.2.1'
          classpath 'com.google.gms:google-services:4.3.2'  // Google Services plugin
      }
  }
  
  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
  }
  </code></pre>
  
  <p>app/build.gradle</p>
  
  <pre><code>def localProperties = new Properties()
  def localPropertiesFile = rootProject.file('local.properties')
  if (localPropertiesFile.exists()) {
      localPropertiesFile.withReader('UTF-8') { reader -&gt;
          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 from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
  
  android {
      compileSdkVersion 28
  
      lintOptions {
          disable 'InvalidPackage'
      }
  
      defaultConfig {
          // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
          applicationId "com.example.auth"
          minSdkVersion 16
          targetSdkVersion 28
          versionCode flutterVersionCode.toInteger()
          versionName flutterVersionName
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
      }
  
      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 {
      testImplementation 'junit:junit:4.12'
      androidTestImplementation 'com.android.support.test:runner:1.0.2'
      androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
  }
  
  apply plugin: 'com.google.gms.google-services'
  </code></pre>