How to fix Invalid User Data in Login API Response

Issue:
You are receiving an error: Invalid user data: undefined while logging in because the expected user and token data are nested under data in the API response.

Solution:
1.Inspect the API response:
The API returns a response with user and token inside data. Here's the structure:

{
  "status": "success",
  "message": "Login successful.",
  "data": {
    "user": { ... },
    "token": "eyJ..."
  }
}

2.Update handleSubmit in LoginPage.jsx:
Modify the code to access data.user and data.token:

const handleSubmit = async (e) => {
  e.preventDefault();
  setLoading(true);
  setError("");

  try {
    const response = await API.post("/login", formData);

    if (response.data?.data?.user && response.data?.data?.token) {
      const { token, user } = response.data.data; // Access user and token
      localStorage.setItem("token", token); // Save token to localStorage
      login(user); // Login with user data
    } else {
      throw new Error("User data or token is missing in response");
    }
  } catch (err) {
    setError(err.response?.data?.message || "Login failed");
  } finally {
    setLoading(false);
  }
};

3.Explanation:
The API response contains data.user and data.token.
Ensure you access them correctly using response.data.data.user and response.data.data.token.
Add error handling if user or token is missing.

Outcome:
This fix ensures that the user and token data are properly accessed and used for login, resolving the undefined error.