Symfony 4 and FOSJsRoutingBundle OK in dev env, but KO in prod env (Routing is not defined)

Question

From symfony 4, I used the bundle jsrouting for get symfony route path from JS code. In dev environment all works fine, but when I set the symfony configuration to prod mod I get this error when I load a page where one of my javascript scrips use jsrouting :

(error occured in a custom javascript file global.js used by my page)

My twig file contains theses lines :

<script src="{{ asset('bundles/fosjsrouting/js/router.js') }}"></script>
<script src="{{ path('fos_js_routing_js', { callback: 'fos.Router.setData' }) }}"></script>
<script src="{{ asset('build/js/us/builder/global.js') }}"></script>

• I set the variable APP_ENV to dev in .env file : when I load the page, from the browser debugger I see :

• But if I set the variable APP_ENV to prod in .env file : when I load the page, from the browser debugger I see :

I don't understand why when I go to prod mode, these two lines :

<script src="/*****/public/bundles/fosjsrouting/js/router.js"></script>
<script src="/*****/public/js/routing?callback=fos.Router.setData"></script>

are missing...and this is why I got the error "Routing is not defined", because "Routing" is defined in the router.js file .

I don't understand why theses lines are missing when Symfony is in the prod environment

The content of my config file /myproject/config/bundles.php :

<?php

return [
    //...
    FOS\JsRoutingBundle\FOSJsRoutingBundle::class => ['all' => true],
];

EDIT The output of some console commands :

Answer 1

Look carefully at your var directories, sub-directories permission and owner.

php bin/console cache:pool:clear cache.global_clearer
chmod -R 777 var/log

put the right owner for the prod directory:

cache/prod