refactor: Update source code with the NPCI and CBS API

src/app/(main)/layout.tsx

@@ -32,6 +32,17 @@ export default function RootLayout({ children }: { children: React.ReactNode })
                     'Authorization': `Bearer ${token}`
                 },
             });
+            if (!response.ok) {
+                notifications.show({
+                    withBorder: true,
+                    color: "red",
+                    title: "Error",
+                    message: "Internal Server Error",
+                    autoClose: 5000,
+                });
+                localStorage.removeItem("access_token");
+                return;
+            }
             const data = await response.json();
             if (response.ok && Array.isArray(data)) {
                 if (data.length > 0) {