Use of undefined constant form_criar_serie - assumed 'form_criar_serie' (this will throw an Error in a future version of PHP) | Laravel parte 1: produtividade no desenvolvimento web

Use of undefined constant form_criar_serie - assumed 'form_criar_serie' (this will throw an Error in a future version of PHP)

@extends('layout')

@section('cabecalho')
Séries
@endsection

@section('conteudo')
@if(!empty($mensagem))
<div class="alert alert-success">
    {{$mensagem}}
</div>
@endif

    <a href="{{ route(form_criar_serie) }}" class="btn btn-dark mb-2">Adicionar</a>
    <ul class="list-group">
        @foreach($series as $serie)
            <li class="list-group-item">
            {{$serie->nome}}
            <form action="/series/{{$serie->id}}" method="post" onsubmit="return confirm(`Tem certeza que deseja remover {{$serie->nome}}`)">
            @csrf
            @method('DELETE')
                <button class="btn btn-danger">Excluir</button>
            </form>

            </li>

        @endforeach
    </ul>
@endsection