diff --git a/internal/service/indexer/l2/report_error.go b/internal/service/indexer/l2/report_error.go
index 410a825..ba992a8 100644
--- a/internal/service/indexer/l2/report_error.go
+++ b/internal/service/indexer/l2/report_error.go
@@ -12,6 +12,7 @@ import (
 	"net/http"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
 )
 
 type SlackMessageElement struct {
@@ -31,7 +32,12 @@ type SlackMessageStructure struct {
 	Blocks  []SlackMessageBlock `json:"blocks"`
 }
 
-func (s *server) ReportFailedTransactionToSlack(txErr error, txHash string, txFunc string, users []common.Address, amount []*big.Int) {
+func (s *server) ReportFailedTransactionToSlack(txErr error, receipt *types.Receipt, txFunc string, users []common.Address, amount []*big.Int) {
+	txHash := "Unknown"
+	if receipt != nil {
+		txHash = receipt.TxHash.Hex()
+	}
+
 	log.Println("===================== Transaction Error =====================")
 	log.Printf("%s transaction error! Please check information below:", txFunc)
 	log.Printf("Transaction Hash: %s", txHash)
@@ -49,6 +55,11 @@ func (s *server) ReportFailedTransactionToSlack(txErr error, txHash string, txFu
 
 	s.sendNotificationMessage(txErr, txHash, txFunc)
 	s.uploadUsersList(txHash, users, amount)
+
+	// select {} purposely block the process as it is a critical error and meaningless to continue
+	// if panic() is called, the process will be restarted by the supervisor
+	// we do not want that as it will be stuck in the same state
+	select {}
 }
 
 func (s *server) sendNotificationMessage(txErr error, txHash string, txFunc string) {
diff --git a/internal/service/indexer/l2/signer.go b/internal/service/indexer/l2/signer.go
index cdd18ae..4c932f3 100644
--- a/internal/service/indexer/l2/signer.go
+++ b/internal/service/indexer/l2/signer.go
@@ -32,7 +32,8 @@ func (s *server) sendTransaction(ctx context.Context, input []byte) (*types.Rece
 		// select {} purposely block the process as it is a critical error and meaningless to continue
 		// if panic() is called, the process will be restarted by the supervisor
 		// we do not want that as it will be stuck in the same state
-		select {}
+		// select {} // Move this process blocker after message report to notification system
+		return receipt, fmt.Errorf("received an invalid transaction receipt")
 	}
 
 	// return the receipt if the transaction is successful
diff --git a/internal/service/indexer/l2/trigger_billing.go b/internal/service/indexer/l2/trigger_billing.go
index 8c506cb..60bf61f 100644
--- a/internal/service/indexer/l2/trigger_billing.go
+++ b/internal/service/indexer/l2/trigger_billing.go
@@ -255,7 +255,7 @@ func (s *server) triggerBillingCollectTokens(ctx context.Context, epoch *big.Int
 	receipt, err := s.sendTransaction(ctx, input)
 
 	if err != nil {
-		s.ReportFailedTransactionToSlack(err, "", l2.MethodCollectTokens, users, amounts)
+		s.ReportFailedTransactionToSlack(err, receipt, l2.MethodCollectTokens, users, amounts)
 		return fmt.Errorf("send transaction receipt: %w", err)
 	}
 
@@ -275,7 +275,7 @@ func (s *server) triggerBillingWithdrawTokens(ctx context.Context, users []commo
 	receipt, err := s.sendTransaction(ctx, input)
 
 	if err != nil {
-		s.ReportFailedTransactionToSlack(err, "", l2.MethodWithdrawTokens, users, amounts)
+		s.ReportFailedTransactionToSlack(err, receipt, l2.MethodWithdrawTokens, users, amounts)
 		return fmt.Errorf("send transaction receipt: %w", err)
 	}
 
diff --git a/internal/service/indexer/l2/trigger_distribute_request_rewards.go b/internal/service/indexer/l2/trigger_distribute_request_rewards.go
index 82f72e3..f60db0d 100644
--- a/internal/service/indexer/l2/trigger_distribute_request_rewards.go
+++ b/internal/service/indexer/l2/trigger_distribute_request_rewards.go
@@ -37,7 +37,7 @@ func (s *server) triggerDistributeRequestRewards(ctx context.Context, nodeAddres
 
 	receipt, err := s.sendTransaction(ctx, input)
 	if err != nil {
-		s.ReportFailedTransactionToSlack(err, "", l2.MethodDistributeRewards, nodeAddress, amounts)
+		s.ReportFailedTransactionToSlack(err, receipt, l2.MethodDistributeRewards, nodeAddress, amounts)
 		return fmt.Errorf("send transaction receipt: %w", err)
 	}