Merge pull request #74 from Dugout-Developers/fix/#68

[FIX] 임시 저장 로직 수정

Author: jjeongdong

src/main/java/com/back/catchmate/domain/game/converter/GameConverter.java

@@ -15,7 +15,9 @@ public Game toEntity(Club homeClub, Club awayClub, CreateGameRequest createGameR
         return Game.builder()
                 .homeClub(homeClub)
                 .awayClub(awayClub)
-                .gameStartDate(LocalDateTime.parse(createGameRequest.getGameStartDate(), DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")))
+                .gameStartDate(createGameRequest.getGameStartDate() != null
+                        ? LocalDateTime.parse(createGameRequest.getGameStartDate(), DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))
+                        : null)
                 .location(createGameRequest.getLocation())
                 .build();
     }