From 65ab3a1f3f309cd297b4cb23283e688d5cf5048f Mon Sep 17 00:00:00 2001
From: Ivan Wang <ivan.wang@mantle.xyz>
Date: Tue, 5 Mar 2024 18:14:49 +0800
Subject: [PATCH] R4R: fix/ivan/L-01 Incorrect Error Message

---
 light/txpool.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/light/txpool.go b/light/txpool.go
index 5a122089d0..5ab9ffdf5b 100644
--- a/light/txpool.go
+++ b/light/txpool.go
@@ -392,7 +392,7 @@ func (pool *TxPool) validateTx(ctx context.Context, tx *types.Transaction) error
 		selfPayAmount = new(big.Int).Add(selfPayAmount, tx.Value())
 		sponsorBalance := currentState.GetBalance(metaTxParams.GasFeeSponsor)
 		if sponsorBalance.Cmp(sponsorAmount) < 0 {
-			return core.ErrInsufficientFunds
+			return types.ErrSponsorBalanceNotEnough
 		}
 		userBalance := currentState.GetBalance(from)
 		if userBalance.Cmp(selfPayAmount) < 0 {