Check specific db error

internal/handlers/ussd/menuhandler.go

@@ -640,10 +640,14 @@ func (h *Handlers) CheckBalance(ctx context.Context, sym string, input []byte) (
 	// get the active sym and active balance
 	activeSym, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
 	if err != nil {
+		if db.IsNotFound(err) {
 			res.Content = "0.00"
 			return res, nil
 		}
 
+		return res, err
+	}
+
 	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
 	if err != nil {
 		return res, nil
@@ -1068,7 +1072,7 @@ func (h *Handlers) CheckVouchers(ctx context.Context, sym string, input []byte)
 	// process voucher data
 	voucherSymbolList, voucherBalanceList := ProcessVouchers(vouchersResp.Result.Holdings)
 
-	prefixdb := storage.NewSubPrefixDb(store, []byte("pfx"))
+	prefixdb := storage.NewSubPrefixDb(store, []byte("vouchers"))
 	err = prefixdb.Put(ctx, []byte("sym"), []byte(voucherSymbolList))
 	if err != nil {
 		return res, nil
@@ -1108,7 +1112,7 @@ func (h *Handlers) GetVoucherList(ctx context.Context, sym string, input []byte)
 
 	// Read vouchers from the store
 	store := h.userdataStore
-	prefixdb := storage.NewSubPrefixDb(store, []byte("pfx"))
+	prefixdb := storage.NewSubPrefixDb(store, []byte("vouchers"))
 
 	voucherData, err := prefixdb.Get(ctx, []byte("sym"))
 	if err != nil {
@@ -1139,7 +1143,7 @@ func (h *Handlers) ViewVoucher(ctx context.Context, sym string, input []byte) (r
 		return res, nil
 	}
 
-	prefixdb := storage.NewSubPrefixDb(store, []byte("pfx"))
+	prefixdb := storage.NewSubPrefixDb(store, []byte("vouchers"))
 
 	// Retrieve the voucher symbol list
 	voucherSymbolList, err := prefixdb.Get(ctx, []byte("sym"))