fix : error code

src/room/room.service.ts

@@ -87,7 +87,7 @@ export class RoomService {
 
   async findById(id: string): Promise<Room> {
     try {
-      return await this.prisma.room.findUnique({
+      let room = await this.prisma.room.findUnique({
         where: { id },
         include: {
           users: {
@@ -102,6 +102,10 @@ export class RoomService {
           },
         },
       });
+      if (room.users.length === 1 && room.start) {
+        room = await this.setStart(room.id, false);
+      }
+      return room;
     } catch (error) {
       if (error instanceof NotFoundException) throw error;
       throw new BadRequestException('방을 찾는 중 오류가 발생했습니다.');