fix: Set ics4 wrapper for ibc transfer keeper

app/app.go

@@ -529,7 +529,7 @@ func NewEthermintApp(
 	// since fee middleware will wrap the IBCKeeper for underlying application.
 	app.TransferKeeper = ibctransferkeeper.NewKeeper(
 		appCodec, keys[ibctransfertypes.StoreKey], app.GetSubspace(ibctransfertypes.ModuleName),
-		nil, // ISC4 Wrapper: fee IBC middleware
+		app.IBCKeeper.ChannelKeeper, // ICS4 Wrapper
 		app.IBCKeeper.ChannelKeeper, app.IBCKeeper.PortKeeper,
 		app.AccountKeeper, app.BankKeeper, scopedTransferKeeper,
 		authtypes.NewModuleAddress(govtypes.ModuleName).String(),