para query improve

plugin/consensus/para/paracommitmsg.go

@@ -835,7 +835,7 @@ func (client *commitMsgClient) getSelfConsensus() (*pt.ParacrossStatus, error) {
 		Param:    types.Encode(&types.Int64{Data: block.Height}),
 	})
 	if err != nil {
-		plog.Error("getSelfConsensusStatus.GetSelfConsOneStage ", "err", err.Error())
+		plog.Debug("getSelfConsensusStatus.GetSelfConsOneStage ", "err", err.Error())
 		return nil, err
 	}
 	stage, ok := ret.(*pt.SelfConsensStage)

plugin/dapp/paracross/executor/query.go

@@ -460,9 +460,13 @@ func (p *Paracross) Query_GetSelfConsStages(in *types.ReqNil) (types.Message, er
 //Query_GetSelfConsOneStage get self consensus one stage
 func (p *Paracross) Query_GetSelfConsOneStage(in *types.Int64) (types.Message, error) {
 	stage, err := getSelfConsOneStage(p.GetStateDB(), in.Data)
+	if errors.Cause(err) == pt.ErrKeyNotExist {
+		return &pt.SelfConsensStage{StartHeight: in.Data}, nil
+	}
 	if err != nil {
 		return nil, err
 	}
+
 	return stage, nil
 }