got error failed to resolve :com.android.support:appcompat-v7:27.1.1

[Atepheh]

when I add library to dependencies I got "failed to resolve :com.android.support:appcompat-v7:27.1.1" error.
my android compileSdkVersion is 25
buildToolsVersion is "25.0.3"

[RobertApikyan]

Do you add project level dependency ?
allprojects { repositories { ... maven { url 'https://jitpack.io' } } }

[Atepheh]

Yes I did. This is my project level dependency:
allprojects {
repositories {
jcenter()
maven { url 'https://jitpack.io' }
maven { url 'https://maven.google.com/' }
}
}

[RobertApikyan]

For now, the only solution for this, is to change target API version to last one (compileSdkVersion 28 buildToolsVersion '28.0.3'). I don't think there's any harm targeting API 28.