Warning: include_once(config.php): Failed to open stream: No such file or directory in /customers/7/d/e/cpa5hddjp/webroots/www/pages/accueil.php on line 1

Warning: include_once(): Failed opening 'config.php' for inclusion (include_path='.:/usr/share/php') in /customers/7/d/e/cpa5hddjp/webroots/www/pages/accueil.php on line 1

<!-- selection de langue   --> 
<div class="lang-selector p-2">
    <a href="?lang=fr" class="btn btn-sm 
Warning: Undefined variable $lang in /customers/7/d/e/cpa5hddjp/webroots/www/pages/accueil.php on line 5
btn-outline-primary">Francais</a>
    <a href="?lang=en" class="btn btn-sm 
Warning: Undefined variable $lang in /customers/7/d/e/cpa5hddjp/webroots/www/pages/accueil.php on line 6
btn-outline-primary">English</a>
</div>

<div class="container-fluid py-4">
    <div class="row border border-white rounded-pill bg-secondary align-items-center py-2">
        <!-- titre bienvenue  -->
        <a href="index.php?lang=fr" class="btn btn-dark mb-1 w-100">
Fatal error: Uncaught Error: Undefined constant "TIT00" in /customers/7/d/e/cpa5hddjp/webroots/www/pages/accueil.php:12
Stack trace:
#0 {main}
  thrown in /customers/7/d/e/cpa5hddjp/webroots/www/pages/accueil.php on line 12