Illuminate\Session\TokenMismatchException in vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken

Laravel is a strong PHP framework that comes with strong security features built in. CSRF (Cross-Site Request Forgery) protection is one of the most important security features in Laravel. However, developers often run into the TokenMismatchException error when they send AJAX requests or fill out forms. This error happens most of the time when the CSRF token that is needed is missing or not valid.

This article will explain what the Laravel TokenMismatchException error is, what usually causes it, and how to fix it in Laravel apps.