fixed avgrank failing if no rank is present in game

main.go

@@ -737,12 +737,14 @@ func getMatches(w http.ResponseWriter, r *http.Request) {
 			Avg     float64 `json:"avg"`
 			MatchID uint64  `json:"match_stats"`
 		}
+		avgRank := 0.0
 
 		err := iMatch.QueryStats().Where(matchplayer.RankOldNEQ(0)).GroupBy(matchplayer.MatchesColumn).Aggregate(ent.Mean(matchplayer.FieldRankOld)).Scan(context.Background(), &v)
 		if err != nil || len(v) == 0 {
-			log.Errorf("[GMS] Unable to calc avg rank for match %d: %v", iMatch.ID, err)
-			w.WriteHeader(http.StatusInternalServerError)
-			return
+			log.Warningf("[GMS] Unable to calc avg rank for match %d: %v", iMatch.ID, err)
+			avgRank = 0.0
+		} else {
+			avgRank = v[0].Avg
 		}
 
 		mResponse = append(mResponse, &utils.MatchResponse{
@@ -756,7 +758,7 @@ func getMatches(w http.ResponseWriter, r *http.Request) {
 			Parsed:      iMatch.DemoParsed,
 			VAC:         iMatch.VacPresent,
 			GameBan:     iMatch.GamebanPresent,
-			AvgRank:     v[0].Avg,
+			AvgRank:     avgRank,
 		})
 	}
 
@@ -794,11 +796,13 @@ func getMatch(w http.ResponseWriter, r *http.Request) {
 		MatchID uint64  `json:"match_stats"`
 	}
 
+	avgRank := 0.0
 	err = tMatch.QueryStats().Where(matchplayer.RankOldNEQ(0)).GroupBy(matchplayer.MatchesColumn).Aggregate(ent.Mean(matchplayer.FieldRankOld)).Scan(context.Background(), &v)
 	if err != nil || len(v) == 0 {
-		log.Errorf("[GM] Unable to calc avg rank for match %d: %v", tMatch.ID, err)
-		w.WriteHeader(http.StatusInternalServerError)
-		return
+		log.Warningf("[GM] Unable to calc avg rank for match %d: %v", tMatch.ID, err)
+		avgRank = 0
+	} else {
+		avgRank = v[0].Avg
 	}
 
 	mResponse := &utils.MatchResponse{
@@ -812,7 +816,7 @@ func getMatch(w http.ResponseWriter, r *http.Request) {
 		MaxRounds:   tMatch.MaxRounds,
 		Parsed:      tMatch.DemoParsed,
 		Stats:       []*utils.StatsResponse{},
-		AvgRank:     v[0].Avg,
+		AvgRank:     avgRank,
 	}
 
 	if tMatch.Date.After(time.Now().AddDate(0, 0, -1*conf.Csgowtfd.DemosExpire)) {