check

src/app/boards/[id]/page.tsx

@@ -4,6 +4,7 @@ import Link from "next/link";
 import { BoardToolbar } from "@/app/components/BoardToolbar";
 import { headers } from "next/headers";
 import prisma from "@/lib/prisma";
+import { notFound } from "next/navigation";
 import { UserAvatar } from "@/app/components/UserAvatar";
 import { RankIcon1st } from "@/app/components/RankIcon1st";
 import { RankIcon2nd } from "@/app/components/RankIcon2nd";
@@ -33,7 +34,10 @@ export default async function BoardDetail({ params, searchParams }: { params: an
   const res = await fetch(new URL("/api/boards", base).toString(), { cache: "no-store" });
   const { boards } = await res.json();
   const board = (boards || []).find((b: any) => b.slug === idOrSlug || b.id === idOrSlug);
-  const id = board?.id as string;
+  if (!board) {
+    return notFound();
+  }
+  const id = board.id as string;
   const siblingBoards = (boards || []).filter((b: any) => b.category?.id && b.category.id === board?.category?.id);
   const categoryName = board?.category?.name ?? "";
   // 메인배너 표시 설정