(1/1) TokenMismatchException

When trying to login to my onlineshop online after a while I get this error message:

(1/1) TokenMismatchException

ref: https://codezen.io/laravel-fix-tokenmismatchexception-in-verifycsrftoken-php-error/

This onlineshop still using laravel 5.4

	<form method="POST" action="{{ url('cpages/login') }}">
          {{ csrf_field() }}

          <div class="form-group">
            <label>Email:</label>
            <input name="email" type="text" class="form-control" />
          </div>

          <div class="form-group">
            <label>Password:</label>
            <input name="password" type="password" class="form-control" />
          </div>

          <div class="form-group">
            <br />
            <input type="submit" value="Login" class="btn btn-primary pull-right" />
          </div>
        </form>
		</div>

I wonder why I still get tokenmismatch error since I already put {{ csrf_field() }} ?