我有一个Android Studio项目，这是build.gradle文件：

buildscript {
ext.kotlin_version = "1.1.3"
repositories {
    jcenter()
    google()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.0'
    classpath 'com.google.gms:google-services:3.0.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
}

}

当我尝试构建应用程序时，出现此错误：

Gradle sync failed: Could not find gradle.jar (com.android.tools.build:gradle:3.0.0).
Searched in the following locations:
https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.jar
Consult IDE log for more details (Help | Show Log) (899 ms)

有什么问题吗？