@csrf is not working in Laravel 5.4

I am following this tutorial on Laravel and I've noticed that I cannot use the @csrf command, but others can use it effectively. But, I can use the {{ csrf_field() }} for the csrf token. I would like to know the reason why. Thanks.

Here's my screenshot on using the @csrf command: Image here

Here's my index.blade.php

       <form action="{{ route('contact.store') }}" method="post">

            @csrf

            <div class="col-md-6 mb-3">
                <label for="username">Username:</label>
                <input class="form-control" type="text" name="name" id="username" placeholder="Username | Email | Phone Number" required>
                <div class="invalid-feedback">
                    Please provide a username
                </div>
            </div>

            <div class="col-md-6 mb-3">
                <label for="password">Password:</label>
                <input class="form-control" type="password" name="name" id="password" placeholder="" required>
                <div class="invalid-feedback">
                    Please provide a password
                </div>
            </div>

            <div class="col-md-6 mb-3">
                <input type="submit">
            </div>
        </form>

As far as I know, there is no @csrf in 5.4, you must use

{{ csrf_field() }}

Instead, @csrf is available in laravel 5.6