Failed to resolve: support-fragment（已解决）

Could not find support-fragment.jar (com.android.support:support-fragment:27.1.1).
Searched in the following locations:
    https://jcenter.bintray.com/com/android/support/support-fragment/27.1.1/support-fragment-27.1.1.jar

Please install the Android Support Repository from the Android SDK Manager.
Open Android SDK Manager

Failed to resolve: support-fragment
Open File

allprojects {
    repositories {
        jcenter()
        mavenCentral()
        maven { url 'https://maven.google.com' }
        maven { url "https://dl.google.com/dl/android/maven2/"}
    }
}

allprojects {
    repositories {
        maven { url 'https://maven.google.com' }
        jcenter()
        mavenCentral()
        maven { url "https://dl.google.com/dl/android/maven2/"}
    }
}