fixed few bugs

src/widgets/Navbar/NavAuth/NavAuth.tsx

@@ -15,7 +15,9 @@ const NavAuth: React.FC<INavAuthProps> = ({
 }: INavAuthProps) => {
   const t = useTranslations("navigation");
   const session = useSession();
+
   const auth = session.status === "authenticated" ? true : false;
+
   const pathname = usePathname();
   return (
     <>

src/widgets/forms/SignUpForm/SignUpForm.tsx

@@ -100,7 +100,7 @@ const SignUpForm = () => {
       }
     } catch (error: unknown) {
       if (error instanceof AxiosError) {
-        if (error.response?.status === 401) {
+        if ([401, 400].includes(error.response?.status as number)) {
           setError("Такой пользователь уже существует");
         } else if (
           error.response?.status.toString().slice(0, 1) === "5"
@@ -147,9 +147,7 @@ const SignUpForm = () => {
           {loader ? <Loader /> : "Войти"}
         </button>
 
-        {/*
         <GoogleButton />
-  */}
       </div>
     </form>
   );