fix

src/tournament/tournament.service.ts

@@ -36,11 +36,11 @@ import { Type } from 'class-transformer';
 class TournamentCache {
   id: number;
   noAnalytics: boolean;
-  @Type(() => Tournament)
+  @Type(() => Object)
   tournament: Tournament;
-  @Type(() => Participant)
+  @Type(() => Object)
   participants: Participant[];
-  @Type(() => Match)
+  @Type(() => Object)
   matches: Match[];
 
   @CacheKey()
@@ -114,7 +114,7 @@ export class TournamentService extends CrudService(Tournament, {
       cache.matches = result.data?.matches || [];
       return cache;
     });
-    const tournament = res.tournament;
+    const tournament = Object.assign(new Tournament(), res.tournament);
     tournament.participants = res.participants;
     tournament.matches = res.matches;
     tournament.wipeDeckBuf(user);