@error directive is an helper
directive for the error() function. It takes the same
argument as the function. An example is shown below
<form method="post">
@csrf
<div> @error('username') </div>
<input type="text" name="username" value="@error.username" >
<div> @error('password') </div>
<input type="password" name="pass" value="@error.pass">
<button @btn('login')></button>
</form>