add edge cond for display line

src/def/challonge.ts

@@ -52,9 +52,9 @@ export class MatchWrapper {
   }
 
   getDisplayLine(player1Name: string, player2Name: string) {
-    return `${player1Name}    ${
+    return `${player1Name || '???'}    ${
       this.match.scores_csv || '未开始'
-    }    ${player2Name}`;
+    }    ${player2Name || '???'}`;
   }
 }
 
@@ -212,10 +212,10 @@ export class TournamentWrapper {
     const currentMatchInfo = match.match;
     const player1Name = this.getParticipantFromParticipantId(
       currentMatchInfo.player1_id,
-    ).participant.name;
+    )?.participant.name;
     const player2Name = this.getParticipantFromParticipantId(
       currentMatchInfo.player2_id,
-    ).participant.name;
+    )?.participant.name;
     return match.getDisplayLine(player1Name, player2Name);
   }