Android – Firebase Crashlytics's dashboard is not opening

I’ve added Firebase Crashlytics dependencies to my Android application, and while the Firebase initialization seems to be working fine (e.g., FirebaseApp.initializeApp(this) is called in onCreate()), I am not seeing any crash reports on the Firebase Crashlytics dashboard, even after intentionally throwing a runtime error.

I have added the required dependencies and applied the Crashlytics plugin in the build.gradle file. The ProGuard rules for Crashlytics have also been configured. I tried force-sending logs using FirebaseCrashlytics.getInstance().sendUnsentReports(), but the dashboard remains inactive.

What could be the possible reasons for this, and how can I resolve the issue to ensure crash reports are sent and displayed properly in the Crashlytics dashboard?

build.gralde(:app)
plugins{
    alias(libs.plugins.android.application)
    alias(libs.plugins.jetbrains.kotlin.android)
    alias(libs.plugins.hilt)
    alias(libs.plugins.compose.compiler)
    alias(libs.plugins.firebase.crashlytics)
}
dependencies {
    implementation(libs.firebase.crashlytics)
}

build.gralde(:project)
plugins{
    alias(libs.plugins.android.application) apply false
    alias(libs.plugins.jetbrains.kotlin.android) apply false
    alias(libs.plugins.hilt) apply false
    alias(libs.plugins.compose.compiler) apply false
    alias(libs.plugins.firebase.crashlytics) apply false
}

libs.version.toml
[versions]
firebase-bom = "33.2.0"
firebase-crashlytics = "3.0.2"

[libraries]
firebase-bom = { group = "com.google.firebase", name = "firebase-bom", version.ref = "firebase-bom" }
firebase-analytics = { group = "com.google.firebase", name = "firebase-analytics" }
firebase-messaging-ktx = { group = "com.google.firebase", name = "firebase-messaging" }
firebase-crashlytics = {group = "com.google.firebase" , name="firebase-crashlytics"}

[plugins]
android-application = { id = "com.android.application", version.ref = "android-gradle-plugin" }
jetbrains-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
hilt = { id = "com.google.dagger.hilt.android", version.ref = "hilt-android" }
compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
firebase-crashlytics = {id = "com.google.firebase.crashlytics" , version.ref = "firebase-crashlytics"}

@HiltAndroidApp
class MyApplication : Application() {
    override fun onCreate() {
        super.onCreate()
        Timber.plant(Timber.DebugTree())

        KakaoSdk.init(this, getString(R.string.kakao_share_app_key))
        FirebaseApp.initializeApp(this)

        Thread.setDefaultUncaughtExceptionHandler { _, throwable ->
            Toast.makeText(this,"Error", Toast.LENGTH_SHORT).show()

          // dashboard is not showing !
            Firebase.crashlytics.recordException(throwable)  
            FirebaseCrashlytics.getInstance().log("APP CRASHED MANUALLY")
            FirebaseCrashlytics.getInstance().sendUnsentReports()
        }
    }
}

I expected the Firebase Crashlytics dashboard to be displayed.