Hi Everyone whenever i fetch the data firstName is coming always as empty but while debuging it is saving can anyone explain this

class PersonaldetailsLocalDatasource() {

    private val realm: Realm by lazy {
        val configuration = RealmConfiguration(schema = setOf(PersonaldetailsDao::class))
        Realm.open(configuration)
    }

    private var _personalDetailsObserver= MutableStateFlow<PersonaldetailsDao>(PersonaldetailsDao())
    val personalDetailsObserver = _personalDetailsObserver.asStateFlow()


    fun storePersonalDetail(personaldetailsDao: PersonaldetailsDao){
        realm.writeBlocking {
            copyToRealm(PersonaldetailsDao().apply {
                firstName = personaldetailsDao.firstName
            })
        }

    }
    fun fetchData(): StateFlow<PersonaldetailsDao> {
        realm.objects(PersonaldetailsDao::class)
        realm.objects(PersonaldetailsDao::class).observe {
            _personalDetailsObserver.value = it[0]
        }
        return personalDetailsObserver
    }
}