How to create a catch-all route for unmatched URLs in Laravel?

To create a catch-all route for unmatched URLs in Laravel, you can add a fallback route at the end of your routes/web.php file. This route will match any URL that is not matched by any other routes.

Here's how you can achieve this:

Open the routes/web.php file in your Laravel project.
Add a wildcard route at the end of the file which will catch all unmatched URLs. This route should use the fallback() method and pass a closure or controller action that will handle the request. For example:

Route::fallback(function () {
    // Handle the request for unmatched URLs here
    // You can return a view or a response
    return view('404');
});

In this example, the fallback() method is used to define a closure that returns a view named '404'. You can modify this code according to your needs by returning a custom response or redirecting to a specific page.

Save the changes to the routes/web.php file.

Now, any URL that does not match any other routes defined before the fallback route will be caught by this catch-all route and the code inside the closure or controller action will be executed.