const {id}=useParams();
    useEffect(()=>{
        if(id){
            getSingleUser(id);
        }
        
    },[id])
    const getSingleUser= async(id)=>{
        const res= await EmployeeService.getEmployeeById(id);
            let employee = res.data;
            setState({ ...res.data[0]
            });
            console.log(employee);
                        

    };

this shows error TypeError: Object(...) is not a function how can I solve this.