(NOBIDS) fix sum calculation

handlers/api.go

@@ -1191,7 +1191,7 @@ func getSyncCommitteeSlotsStatistics(validators []uint64, epoch uint64) (types.S
 		lastExportedEpoch = ((lastExportedDay + 1) * epochsPerDay) - 1
 	}
 
-	err = db.ReaderDb.Get(&syncStats, `SELECT COALESCE(participated_sync_total, 0) AS participated, COALESCE(missed_sync_total, 0) AS missed FROM validator_stats WHERE day = $1 AND validatorindex = ANY($2)`, lastExportedDay, pq.Array(validators))
+	err = db.ReaderDb.Get(&syncStats, `SELECT SUM(COALESCE(participated_sync_total, 0)) AS participated, SUM(COALESCE(missed_sync_total, 0)) AS missed FROM validator_stats WHERE day = $1 AND validatorindex = ANY($2)`, lastExportedDay, pq.Array(validators))
 	if err != nil {
 		return types.SyncCommitteesStats{}, err
 	}