회원가입 버튼을 누르면 백엔드 서버 에러 500번대 에러가 뜹니다

제가 백엔드서버를 제대로 세팅을 하지 않은건지 회원가입 버튼을 누르면 500번 에러가 뜹니다

아래는 회원가입 코드 입니다

import React, { useState, useCallback } from "react";
import axios from "axios";
import { Success, Form, Error, Label, Input, LinkContainer, Button, Header } from "./styles";
import useInput from "@hooks/useinput";

const SignUp = () => {
	const [ email, onChangeEmail, setEmail ] = useInput("");
	const [ nickname, onChangeNickname, setNickname ] = useInput("");
	const [ password, setPasswrod ] = useState("");
	const [ passwordCheck, setPasswrodCheck ] = useState("");
	const [ mismatchError, setMismatchError ] = useState(false);

	const onSubmit = useCallback(
		(e) => {
			e.preventDefault();
			if (!mismatchError) {
				console.log("회원가입 하기");
				axios
					.post("http://localhost:3095/api/users", {
						email,
						password,
						nickname
					})
					.then((res) => {
						console.log(res);
					})
					.catch((err) => {
						console.log(err.res);
					});
			}
		},
		[ email, nickname, password, passwordCheck, mismatchError ]
	);

	const onChangePassword = useCallback(
		(e) => {
			setPasswrod(e.target.value);
			setMismatchError(e.target.value !== passwordCheck);
		},
		[ passwordCheck ]
	);

	const onChangePasswordCheck = useCallback(
		(e) => {
			setPasswrodCheck(e.target.value);
			setMismatchError(e.target.value !== password);
		},
		[ password ]
	);

	return (
		<div>
			<Header>Sleact</Header>
			<Form onSubmit={onSubmit}>
				<Label id="email-label">
					<span>이메일 주소</span>
					<div>
						<Input type="email" id="email" value={email} onChange={onChangeEmail} />
					</div>
				</Label>

				<Label id="nickname-label">
					<span>닉네임</span>
					<div>
						<Input type="text" id="nickname" value={nickname} onChange={onChangeNickname} />
					</div>
				</Label>

				<Label>
					<span>비밀번호</span>
					<div>
						<Input type="password" id="password" value={password} onChange={onChangePassword} />
					</div>
				</Label>

				<Label>
					<span>비밀번호 확인</span>
					<div>
						<Input
							type="password"
							id="password-check"
							value={passwordCheck}
							onChange={onChangePasswordCheck}
						/>
					</div>
					{mismatchError && <Error>비밀번호가 일치하지 않습니다</Error>}
					{!nickname && <Error>닉네임이 비어있습니다</Error>}
				</Label>
				<Button type="submit">회원가입</Button>
			</Form>
		</div>
	);
};

export default SignUp;

만약 백엔드 서버 설정이 잘못된거면 다시 0강 부터 보고 오겠습니다