Symfony doesn't see path to twig template after creating new bundle?

Question

linux

bin/console generate:bundle
answer all questions, tried different config formats. But after generation, the path to the template does not work.
Tried on two computers under Linux mint, but everywhere the same result. Apparently I'm doing something wrong. Help

Answer 1

Generally understood. Thanks to one specialist.
An essence such - I generated the controller through bin/console
In general a problem in the generator. Version 3.4 has a curve.
It was

<?php

namespace AppBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;

class PostController extends Controller
{
    /**
     * @Route("/index")
     */
    public function indexAction()
    {
        return $this->render('AppBundle:Post:index.html.twig', array(
            // ...
        ));
    }

}

It became:

<?php

namespace AppBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;

class PostController extends Controller
{
    /**
     * @Route("/index")
     */
    public function indexAction()
    {
        return $this->render('@App/Post/index.html.twig', array(
            // ...
        ));
    }

}

On error in twig template
Was:
{% extends "::base.html.twig" %}
Became:
{% extends "base.html.twig" %}
And it worked!