I guess you re missing this dependency
kapt "com.google.dagger:hilt-android-compiler:2.28-alpha"
*First add the plugin
apply plugin: 'dagger.hilt.android.plugin'
*Secondly add the dependencies
// Dagger Core
implementation "com.google.dagger:dagger:2.37"
kapt "com.google.dagger:dagger-compiler:2.37"
// Dagger Android
api 'com.google.dagger:dagger-android:2.37'
api 'com.google.dagger:dagger-android-support:2.37'
kapt 'com.google.dagger:dagger-android-processor:2.37'
// Dagger - Hilt
implementation "com.google.dagger:hilt-android:2.37"
kapt "com.google.dagger:hilt-android-compiler:2.37"
*Thirdly add the classpath
classpath "com.google.dagger:hilt-android-gradle-plugin:2.28-alpha"
PS : if you re using java replace kapt with annotationProcessor