Android Studio – Unresolved reference to view model

I am having some problems with my import statements of my view model class. If I clean or add a single line in the two ViewModels that causes the errors, and their dependencies, I can build one more time successfully. But gives me ‘Unresolved reference’ on a bunch of my injected view models if I change anything in my activities/fragments and try and build again without cleaning.

I have tried all different kinds of configurations in my gradle files, to no avail.
I tried different android studio versions, different Hilt versions, Kotlin versions. Invalidating cache, restarting and everything else. Please someone help me!

I have tried to paste my configuration below, together with my MainActivity import statements and one of the viewmodels the Unresolved Reference is referring to.

Main Activity

import androidx.activity.viewModels
import androidx.appcompat.app.AppCompatActivity

import androidx.navigation.NavController
import com.fauna.fauna.appointments.AppointmentsViewModel
import com.fauna.fauna.clinic.ClinicViewModel
import com.fauna.fauna.databinding.ActivityMainBinding
import com.fauna.fauna.dischargeNotes.DischargeNotesViewModel
import com.fauna.fauna.vaccinationCards.VaccinationCardsViewModel
import com.fauna.fauna.updateApp.UpdateAppDialogFragment
import com.fauna.fauna.user.UserViewModel
import dagger.hilt.android.AndroidEntryPoint

@AndroidEntryPoint
class MainActivity : AppCompatActivity(), CoroutineScope { 

    private val vaccinationCardsViewModel: VaccinationCardsViewModel by viewModels()

    //Some functionality 
} 

VaccinationCardsViewModel

import androidx.lifecycle.viewModelScope
import com.fauna.fauna.fragment.VaccinationCardDetail
import com.fauna.fauna.util.NotificationService
import com.fauna.fauna.util.Result
import com.fauna.fauna.util.SnackBarViewModel
import com.fauna.fauna.util.getSeconds
import dagger.hilt.android.lifecycle.HiltViewModel
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.channels.ConflatedBroadcastChannel
import kotlinx.coroutines.flow.catch
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.launch
import javax.inject.Inject

@HiltViewModel
class VaccinationCardsViewModel @Inject constructor(
    private val vaccinationCardsRepository: VaccinationCardsRepository,
    private val notificationService: NotificationService
) : SnackBarViewModel() { //Some functionality} 

build.gradle file

buildscript {
    ext.kotlin_version = '1.5.21'
    ext.apollo_version = '2.5.5'
    ext.hilt_version = '2.37'
    def nav_version = '2.3.2'
    repositories {
        google()
        mavenCentral()

    }
    dependencies {
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
        classpath 'com.android.tools.build:gradle:7.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"

    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle app file

    id("com.android.application")
    id("kotlin-android")
    id("com.apollographql.apollo").version("$apollo_version")
    id("androidx.navigation.safeargs.kotlin")
    id("kotlin-kapt")
    id("dagger.hilt.android.plugin")
    id('com.google.gms.google-services')
    id('com.google.firebase.crashlytics')
}

android {
    signingConfigs {
        debugConfig {
            //..omittet..
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
    compileSdkVersion 30
    buildToolsVersion "29.0.3"
    defaultConfig {
        applicationId "com.fauna.fauna"
        minSdkVersion 23
        targetSdkVersion 30
        versionCode 15
        versionName "0.8"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }

    lintOptions {
        abortOnError false
    }

    buildFeatures {
        viewBinding true
    }
    buildTypes {
        //..Omittet..

    }
    compileOptions {
        // Flag to enable support for the new language APIs
        coreLibraryDesugaringEnabled true
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'androidx.core:core-ktx:1.6.0'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'

    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'

    def nav_version = "2.3.5"
    implementation "androidx.navigation:navigation-runtime-ktx:$nav_version"
    implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
    implementation "androidx.navigation:navigation-ui-ktx:$nav_version"

    // Feature module Support
    implementation "androidx.navigation:navigation-dynamic-features-fragment:$nav_version"

    // Testing Navigation
    androidTestImplementation "androidx.navigation:navigation-testing:$nav_version"

    // Jetpack Compose Integration
    implementation "androidx.navigation:navigation-compose:2.4.0-alpha06"
    implementation "androidx.security:security-crypto:1.1.0-alpha03"

    testImplementation 'junit:junit:4.13.1'
    androidTestImplementation 'androidx.test:runner:1.4.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

    //View model
    implementation "androidx.activity:activity-ktx:1.3.1"
    implementation "androidx.fragment:fragment-ktx:1.3.6"

    // Hilt
    implementation "com.google.dagger:hilt-android:$hilt_version"
    kapt "com.google.dagger:hilt-android-compiler:$hilt_version"
}

kapt {
    correctErrorTypes = true
}

hilt {
    enableExperimentalClasspathAggregation = true
}

apollo {
    generateKotlinModels.set(true)
}

beforeEvaluate {
    getApiKey()
}

def getSecretKey(string) {
    def keysFile = file("secret.properties")
    def keysProperties = new Properties()
    keysProperties.load(new FileInputStream(keysFile))
    def key = keysProperties[string]
    println "key: " + key
    return key
}

apply plugin: 'com.google.gms.google-services'
apply plugin: 'com.google.firebase.crashlytics' 

Error upon building the project without cleaning:

Task :app:compileDevKotlin

e: /main/java/com/fauna/fauna/MainActivity.kt: (19, 41): Unresolved reference: VaccinationCardsViewModel

e: /main/java/com/fauna/fauna/MainActivity.kt: (21, 29): Unresolved reference: UserViewModel

e: /main/java/com/fauna/fauna/MainActivity.kt: (47, 44): Unresolved reference: VaccinationCardsViewModel

e: /main/java/com/fauna/fauna/MainActivity.kt: (47, 73): Not enough information to infer type variable VM

e: /main/java/com/fauna/fauna/MainActivity.kt: (47, 73): Property delegate must have a 'getValue(MainActivity, KProperty<*>)' method. None of the following functions is suitable: 
public inline operator fun <T> Lazy<???>.getValue(thisRef: Any?, property: KProperty<*>): ??? defined in kotlin

e: /main/java/com/fauna/fauna/MainActivity.kt: (49, 32): Unresolved reference: UserViewModel

e: /main/java/com/fauna/fauna/MainActivity.kt: (49, 49): Not enough information to infer type variable VM

e: /main/java/com/fauna/fauna/MainActivity.kt: (49, 49): Property delegate must have a 'getValue(MainActivity, KProperty<*>)' method. None of the following functions is suitable: 
public inline operator fun <T> Lazy<???>.getValue(thisRef: Any?, property: KProperty<*>): ??? defined in kotlin

e: /main/java/com/fauna/fauna/MainActivity.kt: (175, 93): Unresolved reference: it