React App Bug Fixes & Functionality Enhancement -- 2

Description:

I have a React authentication application that needs several bugs fixed and incomplete functionality completed. The project uses React, React Router, and Axios.

Issues to Fix:

Login Form Bug - Password input label has incorrect htmlFor attribute pointing to "email" instead of "password"

Empty Login Handler - The handleSubmit method in Login.js needs implementation for API authentication call and error handling

Incomplete User State Management - App.js has empty setCurrentUser and logout methods that need proper token handling and localStorage integration

Missing Profile Data Fetch - ProfileContainer.js has empty componentDidMount that should fetch user data via Axios

Class Naming Inconsistency - ContactsContainer.js class is named "Contacts" instead of "ContactsContainer"

Requirements:

Fix all identified bugs
Implement empty method stubs with proper functionality
Ensure authentication flow works correctly (login, logout, protected routes)
Test that the application runs without errors
Maintain existing code structure and styling

The codebase is clean and well-structured. All dependencies are already installed. This should be straightforward work for an experienced React developer.