Не могу понять в чем моя ошибка, выходит вот такое сообщение:

Description:

Parameter 2 of constructor in com.example.messengerapi.services.MessageServiceImpl required a bean of type 'com.example.messengerapi.services.ConversationService' that could not be found.

Action:

Consider defining a bean of type 'com.example.messengerapi.services.ConversationService' in your configuration.

Код класса:

package com.example.messengerapi.services

import com.example.messengerapi.exceptions.MessageEmptyException
import com.example.messengerapi.exceptions.MessageRecipientInvalidException
import com.example.messengerapi.models.Conversation
import com.example.messengerapi.models.Message
import com.example.messengerapi.models.User
import com.example.messengerapi.repositories.ConversationRepository
import com.example.messengerapi.repositories.MessageRepository
import com.example.messengerapi.repositories.UserRepository
import org.springframework.stereotype.Service

@Service
class MessageServiceImpl(val repository: MessageRepository,
                         val conversationRepository: ConversationRepository,
                         val conversationService: ConversationService,
                         val userRepository: UserRepository) : MessageService {

    @Throws(MessageEmptyException::class,
        MessageRecipientInvalidException::class)
    override fun sendMessage(sender: User, recipientId: Long,
                             messageText: String): Message {
        val optional = userRepository.findById(recipientId)
        if (optional.isPresent) {
            val recipient = optional.get()

            if (!messageText.isEmpty()) {
                val conversation: Conversation = if (conversationService
                        .conversationExists(sender, recipient)) {

                    conversationService.getConversation(sender, recipient)
                            as Conversation
                } else {
                    conversationService.createConversation(sender, recipient)
                }
                conversationRepository.save(conversation)

                val message = Message(sender, recipient, messageText, conversation)
                repository.save(message)
                return message
            }
        } else {
            throw MessageRecipientInvalidException("The recipient id '$recipientId' is invalid.")
        }
        throw MessageEmptyException()
    }
}

Код интерфейса:

package com.example.messengerapi.services

import com.example.messengerapi.models.Conversation
import com.example.messengerapi.models.User

interface ConversationService {
    fun createConversation(userA: User, userB: User): Conversation
    fun conversationExists(userA: User, userB: User): Boolean
    fun getConversation(userA: User, userB: User): Conversation?
    fun retrieveThread(conversationId: Long): Conversation
    fun listUserConversations(userId: Long): List<Conversation>
    fun nameSecondParty(conversation: Conversation, userId: Long): String
}