fix: handle error

src/pages/Tariffs/Tariffs.tsx

@@ -190,7 +190,11 @@ function TariffPage() {
           return;
         }
 
-        const [discounts] = await getDiscounts(userId);
+        const [discounts, discountsError] = await getDiscounts(userId);
+
+        if (discountsError) {
+          throw new Error(discountsError);
+        }
 
         if (discounts?.length) {
           setDiscounts(discounts);

src/ui_kit/CheckFastlink.tsx

@@ -29,6 +29,7 @@ export function CheckFastlink() {
         setDiscounts(discounts);
       }
     };
+
     get();
   }, []);