in viewmodel

fun getData() {
        viewModelScope.launch(Dispatchers.IO) {
            dataRepo.getData()
        }
    }

I Fragment .observe not working. I want a example of use it with recycler /adapter

i saw another repo like work that this but here dont know how code it

  when
   is Resource.Loading -> {
   is Resource.Success -> {
   is Resource.Failure -> {

I clicked on use the template button and clone the repo.

Getting this error on build

DataModel.java:7: error: An entity must have at least 1 field annotated with @PrimaryKey

> Task :app:kaptDebugKotlin
E:\workspace\android\android_mvvm\app\build\tmp\kapt3\stubs\debug\com\rohitjakhar\mvvmtemplate\data\local\model\DataModel.java:7: error: An entity must have at least 1 field annotated with @PrimaryKey
public final class DataModel {
             ^
E:\workspace\android\android_mvvm\app\build\tmp\kapt3\stubs\debug\com\rohitjakhar\mvvmtemplate\data\local\AppDatabase.java:7: warning: Schema export directory is not provided to the annotation processor so we cannot export the schema. You can either provide `room.schemaLocation` annotation processor argument OR set exportSchema to false.
public abstract class AppDatabase extends androidx.room.RoomDatabase {
                ^

> Task :app:kaptDebugKotlin FAILED

Execution failed for task ':app:kaptDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptWithoutKotlincTask$KaptExecutionWorkAction
   > java.lang.reflect.InvocationTargetException (no error message)

* Try:
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