fix

disperser/dataapi/subgraph/api.go

@@ -221,7 +221,7 @@ func (a *api) QueryOperatorAddedToQuorum(ctx context.Context, startBlock, endBlo
 	}
 	skip := 0
 	result := new(queryOperatorAddedToQuorum)
-	addedQuorums := make([]*OperatorQuorum, 0)
+	addedToQuorums := make([]*OperatorQuorum, 0)
 	for {
 		variables["first"] = graphql.Int(maxEntriesPerQuery)
 		variables["skip"] = graphql.Int(skip)
@@ -232,10 +232,10 @@ func (a *api) QueryOperatorAddedToQuorum(ctx context.Context, startBlock, endBlo
 		if len(result.OperatorAddedToQuorum) == 0 {
 			break
 		}
-		addedQuorums = append(addedQuorums, result.OperatorAddedToQuorum...)
+		addedToQuorums = append(addedToQuorums, result.OperatorAddedToQuorum...)
 		skip += maxEntriesPerQuery
 	}
-	return addedQuorums, nil
+	return addedToQuorums, nil
 }
 
 // QueryOperatorRemovedFromQuorum finds operators' quorum opt-out history in range [startBlock, endBlock].
@@ -249,7 +249,7 @@ func (a *api) QueryOperatorRemovedFromQuorum(ctx context.Context, startBlock, en
 	}
 	skip := 0
 	result := new(queryOperatorRemovedFromQuorum)
-	removedQuorums := make([]*OperatorQuorum, 0)
+	removedFromQuorums := make([]*OperatorQuorum, 0)
 	for {
 		variables["first"] = graphql.Int(maxEntriesPerQuery)
 		variables["skip"] = graphql.Int(skip)
@@ -260,8 +260,8 @@ func (a *api) QueryOperatorRemovedFromQuorum(ctx context.Context, startBlock, en
 		if len(result.OperatorRemovedFromQuorum) == 0 {
 			break
 		}
-		removedQuorums = append(removedQuorums, result.OperatorRemovedFromQuorum...)
+		removedFromQuorums = append(removedFromQuorums, result.OperatorRemovedFromQuorum...)
 		skip += maxEntriesPerQuery
 	}
-	return removedQuorums, nil
+	return removedFromQuorums, nil
 }

disperser/dataapi/subgraph_client.go

@@ -364,6 +364,10 @@ func parseOperatorQuorum(operatorQuorum []*subgraph.OperatorQuorum) ([]*Operator
 		if err != nil {
 			return nil, err
 		}
+		if len(opq.QuorumNumbers) < 2 || len(opq.QuorumNumbers)%2 != 0 {
+			return nil, fmt.Errorf("the QuorumNumbers is expected to start with 0x and have an even length, QuorumNumbers: %s", string(opq.QuorumNumbers))
+		}
+		// The quorum numbers string starts with "0x", so we should skip it.
 		quorumStr := string(opq.QuorumNumbers)[2:]
 		quorumNumbers := make([]byte, 0)
 		for i := 0; i < len(quorumStr); i += 2 {