错误：任务'：app：processDebugResources'的执行失败。错误：多个库的包名称为“ android.support.graphics.drawable”

Question

由于任务执行失败，我的android studio现在无法构建，它说我有多个库，包名称为android.support.graphics.drawable。这是我的build.gradle（项目：DemoApp）

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

buildscript {
    repositories {
        jcenter()
         }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.1'

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

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }

    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle（模块：应用程序）

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.0"
    defaultConfig {
        applicationId "com.example.rishavsharma.demoapp"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:28.+'
    testCompile 'junit:junit:4.12'
}