Hata Kodu ;
ERROR: Could not find method implementation() for arguments [directory 'libs'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
Hata kodu sayfası
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:support-v4:27.1.1'
implementation 'com.google.firebase:firebase-messaging:17.1.0'
implementation 'com.github.jrvansuita:MaterialAbout:+'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.onesignal:OneSignal:3.9.1'
implementation 'com.github.GrenderG:Toasty:1.3.0'
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'
implementation 'com.android.support:design:27.1.1'
implementation 'com.google.android.gms:play-services-ads:15.0.1'
}