What is the cause of getting empty array list - spring-boot

Question

I have 9 records in my database ,I want to fetch data using Id, I need
all the data of given ID, But when I try to fetch the data using JPQL
I am getting empty data in my console and my postman
Here is all the details of my code work
EmployeeRepository
package com.nilmani.workload.repository
import com.nilmani.workload.entity.Bank
import com.nilmani.workload.entity.Employee
import org.springframework.data.jpa.repository.JpaRepository
import org.springframework.data.jpa.repository.Query
import org.springframework.web.bind.annotation.RequestParam
interface EmployeeRepository : JpaRepository<Employee,Long> {
#Query(" SELECT e.bankDetails from Employee e where e.id= :id")
fun findBankDetails(id: Long):Long
}
EmployeeController
package com.nilmani.workload.controller
import com.nilmani.workload.entity.*
import com.nilmani.workload.model.request.*
import com.nilmani.workload.model.response.*
import com.nilmani.workload.repository.*
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.http.HttpStatus
import org.springframework.http.ResponseEntity
import org.springframework.web.bind.annotation.*
#RestController
#RequestMapping("/test")
class ManagerController {
#Autowired
private lateinit var employeeRepository: EmployeeRepository
/**Get User details using UserId*/
#GetMapping("/my")
fun singleUser(#ModelAttribute request:ReqSingleUser){
val existUser:List<Employee> = employeeRepository.getEmployeesById(request.id)
existUser.forEach ({
println(existUser)
})
}
}
ModelClass
package com.nilmani.workload.model.request
data class ReqSingleUser(
val id:Long=-1
)
What is the reason for getting empty data,But already data present in
my database
I am using IntelliJ IDEA as code editor, mac as operating system
EmployeeEntityClass
package com.nilmani.workload.entity
import com.nilmani.workload.model.request.ReqBank
import javax.persistence.*
#Entity
data class Employee(
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
val id:Long=-1,
val name:String="",
val mobile:Long=-1,
#OneToOne(cascade = [CascadeType.ALL])
#JoinTable(
name = "emp_workstation",
joinColumns = [JoinColumn(name = "employee_id", referencedColumnName = "id")],
inverseJoinColumns = [JoinColumn(name = "bank_id", referencedColumnName = "id")]
)
val bankDetails: Bank,
val address:String=""
)