Lateinit property readAllData has not been initialized and Cannot create an instance of class com.example.votestatistics.data.UserViewModel

Android
1

Hi guys, I am creating a database in room and I have had these problems:
*Cannot create an instance of class com.example.votestatistics.data.UserViewModel
*lateinit property readAllData has not been initialized

class UserRepository(private val userDao: UserDao) {

    lateinit var loginDatabase: UserDatabase
    lateinit var readAllData: LiveData<User>

    suspend fun adduser(user: User) {
        userDao.addUser(user)
    }

    fun initializeDB(context: Context): UserDatabase {
        return UserDatabase.getDatabase(context)
    }

    fun getLoginDetails(context: Context, username: String, password: String): LiveData<User>{
        loginDatabase = initializeDB(context)
        readAllData = loginDatabase.userDao().readAllData(username, password)
        return readAllData
    }

}

///UserViewModel
class UserViewModel(application: Application) : AndroidViewModel(application) {

    var readAllData: LiveData<User>
    var repository: UserRepository

    init {
        val userDao = UserDatabase.getDatabase(
                application
        ).userDao()
        repository = UserRepository(userDao)
        readAllData = repository.readAllData
    }

    fun addUser(user: User) {
        viewModelScope.launch(Dispatchers.IO) {
            repository.adduser(user)
        }
    }

    fun getLoginDetails(context: Context, username: String, password: String): LiveData<User>? {
        readAllData = repository.getLoginDetails(context, username, password)
        return readAllData
    }

}
//Fragment
 binding.buttonIngresar.setOnClickListener {

            val name = binding.textInputUser.editText?.text.toString()
            val passWord = binding.textInputPassword.editText?.text.toString()
            context?.let { it1 ->
                mUserViewModel.getLoginDetails(it1, name, passWord)?.observe(viewLifecycleOwner, Observer {

                    if (it == null) {
                        Toast.makeText(context, "No Found", Toast.LENGTH_SHORT).show()
                    } else {
                        Toast.makeText(context, "Found", Toast.LENGTH_SHORT).show()
                    }

                })
            }
        }