How to handle query method's return type room using Kotlin, Coroutines, ViewModel, LiveData

the building is failed and I'm getting lots of errors that are pointing into my Dao class and the error is

Error 1:

Not sure how to handle query method's return type (java.lang.Object). DELETE query methods must either return void or int (the number of deleted rows).

Error 2:

error: Query method parameters should either be a type that can be converted into a database column or a List / Array that contains such type. You can consider adding a Type Adapter for this. kotlin.coroutines.Continuation<? super kotlin.Unit> continuation);

Error 3:

error: Unused parameter: continuation public abstract java.lang.Object clear(@org.jetbrains.annotations.NotNull()

Error 4:

error: Type of the parameter must be a class annotated with @Entity or a collection/array of it. kotlin.coroutines.Continuation<? super kotlin.Unit> continuation);

Error 5:

error: Not sure how to handle insert method's return type. public abstract java.lang.Object insert(@org.jetbrains.annotations.NotNull()

**Here is my full code:

MainActivity I used declared the Views as lateinit's and late did the findViewById's:-

class MainActivity : AppCompatActivity() {

    private lateinit var model: StudentViewModel
    lateinit var textView: TextView
    lateinit var btnClear: Button
    lateinit var btnInsert: Button

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        textView = this.findViewById(R.id.textView)
        btnClear = this.findViewById(R.id.btnClear)
        btnInsert = this.findViewById(R.id.btnInsert)

        // make text view text scrollable
        textView.movementMethod = ScrollingMovementMethod()

        // initialize the student view model
        model = ViewModelProvider(this).get(StudentViewModel::class.java)


        // observe the students live data
        model.students.observe(this, Observer { students->
            textView.text = "Students(${students.size})..."

            students.forEach {
                textView.append("\n${it.id} | ${it.fullName} : ${it.result}")
            }
        }
        )


        btnInsert.setOnClickListener {
            // generate a new student
            val student = Student(
                    null,
                    UUID.randomUUID().toString(),
                    Random.nextInt(100)
            )

            // insert new student into room database
            model.insert(student)
        }


        btnClear.setOnClickListener {
            // delete all students from room student table
            model.clear()
        }
    }
}

Build Gradle (Module) used :-

plugins {
    id 'com.android.application'
    id 'kotlin-android'
    id 'kotlin-kapt'
}

android {
    compileSdk 31

    defaultConfig {
        applicationId "a.a.so69998391kotlinroom_to_handle_query_return_types"
        minSdk 21
        targetSdk 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.7.0'
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
    implementation 'androidx.room:room-ktx:2.4.0-beta01'
    implementation 'androidx.room:room-runtime:2.4.0-beta01'
    implementation 'androidx.lifecycle:lifecycle-common:2.4.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel-savedstate:2.4.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:2.4.0'
    testImplementation 'junit:junit:4. '
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
    kapt 'androidx.lifecycle:lifecycle-compiler:2.4.0'
    kapt 'androidx.room:room-compiler:2.4.0-beta01'
}