Next.js can't recognize the exported config field in route "/src/middleware":

import type { NextRequest } from "next/server";
import { NextResponse } from "next/server";

const isDevelop = process.env.NODE_ENV === "development";
const originPath = isDevelop
  ? process.env.NEXT_PUBLIC_DEVELOPMENT_REDIRECT_URL
  : process.env.NEXT_PUBLIC_PRODUCTION_REDIRECT_URL || "";

const HOST = isDevelop
  ? process.env.NEXT_PUBLIC_DEVELOPMENT_PLATFORM_SERVER_HOST
  : process.env.NEXT_PUBLIC_PRODUCTION_PLATFORM_SERVER_HOST;

export const isValidateProjectBySnum = async (SNUM: number, token: string) => {
  const url = `${HOST}/project/access/${SNUM}`;
  const response = await fetch(url, {
    headers: {
      Authorization: `Bearer ${token}`,
    },
  });
  const data = await response.json();
  return data.result;
};

export async function middleware(request: NextRequest) {
  const { pathname } = request.nextUrl;
  const token = request.cookies.get("token")?.value;

  // 결과 페이지일 경우 검사
  if (pathname.startsWith("/result/")) {
    const resultMatch = pathname.match(/^\/result\/(\d+)$/);
    // 유효하지 않을 경우
    if (!resultMatch) return NextResponse.redirect(`${originPath}`);

    if (resultMatch) {
      const snum = resultMatch[1];
      if (!snum || isNaN(+snum)) return NextResponse.redirect(`${originPath}`);
      if (token) {
        const isValid = await isValidateProjectBySnum(+snum, token);
        if (!isValid) return NextResponse.redirect(`${originPath}`);
      }
    }
  }
  return NextResponse.next();
}

// 미들웨어가 실행될 경로 설정
const matcher = [
  "/result/:snum*",
  "/((?!healthy|api|_next/static|_next/image|favicon.ico).*)",
];
export const config = {
  matcher,
};

export const config = {
  matcher:  [
	  "/result/:snum*",
	  "/((?!healthy|api|_next/static|_next/image|favicon.ico).*)",
	],
};