JWT malformed error on protected routes due to missing or invalid auth token

[ishitak12]

While running the project locally, authenticated API requests consistently fail with the following backend error:
JsonWebTokenError: jwt malformed
This error occurs inside the authentication middleware when attempting to verify the JWT token. As a result, protected routes do not function correctly even after a user successfully logs in or registers.
-Login/Register flow may appear successful on the frontend
-localStorage.getItem("token") sometimes returns undefined
-Authenticated API requests are sent without a valid JWT
-Backend throws JsonWebTokenError: jwt malformed
-Protected features fail:
1.Dashboard data loading
2.Medication status updates
3.Socket.IO authenticated connections
4.WebSocket connection errors also occur due to failed authentication

[ishitak12]

@tirth-patel06
Please assign this issue to me. I would like to work on this issue.

[tirth-patel06]

@ishitak12
issue #79 open and assigned