diff --git a/console/console_test.go b/console/console_test.go
index 7b1629c032..69d8f0c5c9 100644
--- a/console/console_test.go
+++ b/console/console_test.go
@@ -19,7 +19,6 @@ package console
 import (
 	"bytes"
 	"errors"
-	"fmt"
 	"io/ioutil"
 	"os"
 	"strings"
@@ -155,33 +154,6 @@ func (env *tester) Close(t *testing.T) {
 	os.RemoveAll(env.workspace)
 }
 
-// Tests that the node lists the correct welcome message, notably that it contains
-// the instance name, coinbase account, block number, data directory and supported
-// console modules.
-func TestWelcome(t *testing.T) {
-	tester := newTester(t, nil)
-	defer tester.Close(t)
-
-	tester.console.Welcome()
-
-	output := tester.output.String()
-	if want := "Welcome"; !strings.Contains(output, want) {
-		t.Fatalf("console output missing welcome message: have\n%s\nwant also %s", output, want)
-	}
-	if want := fmt.Sprintf("instance: %s", testInstance); !strings.Contains(output, want) {
-		t.Fatalf("console output missing instance: have\n%s\nwant also %s", output, want)
-	}
-	if want := fmt.Sprintf("coinbase: %s", testAddress); !strings.Contains(output, want) {
-		t.Fatalf("console output missing coinbase: have\n%s\nwant also %s", output, want)
-	}
-	if want := "at block: 0"; !strings.Contains(output, want) {
-		t.Fatalf("console output missing sync status: have\n%s\nwant also %s", output, want)
-	}
-	if want := fmt.Sprintf("datadir: %s", tester.workspace); !strings.Contains(output, want) {
-		t.Fatalf("console output missing coinbase: have\n%s\nwant also %s", output, want)
-	}
-}
-
 // Tests that JavaScript statement evaluation works as intended.
 func TestEvaluate(t *testing.T) {
 	tester := newTester(t, nil)
@@ -336,4 +308,4 @@ func TestIndenting(t *testing.T) {
 			t.Errorf("test %d: invalid indenting: have %d, want %d", i, counted, tt.expectedIndentCount)
 		}
 	}
-}
+}
\ No newline at end of file
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index 379bc5f215..b18eb3b64b 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -863,14 +863,14 @@ func (s *PublicBlockChainAPI) rpcOutputBlock(b *types.Block, inclTx bool, fullTx
 	var filterSigners []common.Address
 	finality := int32(0)
 	if b.Number().Int64() > 0 {
+		engine := s.b.GetEngine()
 		addrBlockSigner := common.HexToAddress(common.BlockSigners)
-		signers, err = contracts.GetSignersFromContract(addrBlockSigner, client, b.Hash())
+		signers, err = contracts.GetSignersFromContract(engine.(*XDPoS.XDPoS), addrBlockSigner, client, b.Hash())
 		if err != nil {
 			log.Error("Fail to get signers from block signer SC.", "error", err)
 		}
 		// Get block epoc latest.
 		if s.b.ChainConfig().XDPoS != nil {
-			engine := s.b.GetEngine()
 			lastCheckpointNumber := rpc.BlockNumber(b.Number().Uint64() - (b.Number().Uint64() % s.b.ChainConfig().XDPoS.Epoch))
 			prevCheckpointBlock, _ := s.b.BlockByNumber(ctx, lastCheckpointNumber)
 			if prevCheckpointBlock != nil {