Parameter 0 of constructor in 'y' required a bean of type 'x' that could not be found - spring

Question

try to create a simple crud api using spring boot kotlin but keep getting this error 'Parameter 0 of constructor in com.example.demo.service.CustomerService required a bean of type 'com.example.demo.repository.CustomerRepository' that could not be found.'
this is my directory structure
directory structure (https://i.stack.imgur.com/gw9Fp.png)
this is my model/customerModel.kt file
package com.example.demo.model
import java.util.Date
import javax.persistence.Id
data class CustomerModel (
#Id
val customerId : Int,
val customerName : String,
val customerBirthDate : Date,
) {
}
this is my repository
package com.example.demo.repository
import com.example.demo.model.CustomerModel
import org.springframework.data.repository.CrudRepository
import org.springframework.stereotype.Repository
#Repository
interface CustomerRepository : CrudRepository<CustomerModel, Int> {
}
this is my service
package com.example.demo.service
import com.example.demo.model.CustomerModel
import com.example.demo.repository.CustomerRepository
import org.springframework.stereotype.Service
#Service
class CustomerService (val customerRepository: CustomerRepository)
{
fun getAllCustomers(): List<CustomerModel> = customerRepository.findAll().toList()
}
this is my controller
package com.example.demo.controller
import com.example.demo.Message
import com.example.demo.model.CustomerModel
import com.example.demo.service.CustomerService
import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.PostMapping
import org.springframework.web.bind.annotation.RequestMapping
import org.springframework.web.bind.annotation.RestController
#RestController
#RequestMapping("/api/v1")
class CustomerController (val customerService: CustomerService){
#GetMapping("/customers")
fun getAllCustomer() : List<CustomerModel>
{
return customerService.getAllCustomers()
}
}
this is my application.properties
## use create when running the app for the first time
## then change to "update" which just updates the schema when necessary
spring.jpa.hibernate.ddl-auto=update
spring.jpa.database-platform=org.hibernate.dialect.Oracle10gDialect
spring.datasource.url= jdbc:oracle:thin:#localhost:1521:XE
spring.datasource.username=SYS
spring.datasource.password=*********
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
## this shows the sql actions in the terminal logs
spring.jpa.show-sql=true
i start to run the code but always get this error
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of constructor in com.example.demo.service.CustomerService required a bean of type 'com.example.demo.repository.CustomerRepository' that could not be found.
Action:
Consider defining a bean of type 'com.example.demo.repository.CustomerRepository' in your configuration.
Process finished with exit code 1
i try googling and most i found usually missing annotation or the component is not scanned by the application but it's still not working. this is my first time using kotlin and spring boot so i have no idea how to solve this