...

packages/service_api/lib/models/game_rank_dto.dart

@@ -12,9 +12,11 @@ class GameRankDto {
   });
 
   factory GameRankDto.fromJson(Map<String, dynamic> json) {
+    // [🔥 수정] playerName에 Null check 추가
+    // [🔥 수정] primaryScore에 Null check 및 안전한 toInt() 추가
     return GameRankDto(
-      playerName: json['playerName'],
-      primaryScore: (json['primaryScore'] as num).toInt(),
+      playerName: json['playerName'] ?? 'Unknown', 
+      primaryScore: (json['primaryScore'] as num?)?.toInt() ?? 0, 
       secondaryScore: (json['secondaryScore'] as num?)?.toInt(),
     );
   }
@@ -33,7 +35,8 @@ class GameRankWithRankNumber {
   factory GameRankWithRankNumber.fromJson(Map<String, dynamic> json) {
     return GameRankWithRankNumber(
       rankData: GameRankDto.fromJson(json['rankData']),
-      rankNumber: (json['rankNumber'] as num).toInt(),
+      // [🔥 수정] rankNumber에 Null check 및 안전한 toInt() 추가
+      rankNumber: (json['rankNumber'] as num?)?.toInt() ?? 0,
     );
   }
 }
@@ -65,4 +68,4 @@ class RankSubmissionResult {
       myRank: myRankData,
     );
   }
-}
+}