umebiusさん
サポートありがとうございます。
もう何だか分らないのですがもう一からやり直さなければダメでしょうか？アドバイスを頂ければ有り難いです。よろしくお願い致します。

デバックモード自体、何だか記事のようにはならなくて・・・
アクセスすると、

An error occurred while loading the web debug toolbar (500: Internal Server Error).
Do you want to open the profiler?
↓
OK
↓
The profiler template "@SaxulumWebProfilerProvider/Collector/db.html.twig" for data collector "db" does not exist.

in TemplateManager.php line 111
at TemplateManager->getNames(object(Profile)) in TemplateManager.php line 56
at TemplateManager->getName(object(Profile), 'request') in ProfilerController.php line 102
at ProfilerController->panelAction(object(Request), '27ff43')
at call_user_func_array(array(object(ProfilerController), 'panelAction'), array(object(Request), '27ff43')) in HttpKernel.php line 144
at HttpKernel->handleRaw(object(Request), '1') in HttpKernel.php line 64
at HttpKernel->handle(object(Request), '1', true) in Application.php line 586
at Application->handle(object(Request)) in Application.php line 563
at Application->run() in index_dev.php line 103

ログ-----------------------------
eccube.ERRORと。

[2018-05-05 18:26:39] eccube.INFO: Matched route "admin_content_file". {"route_parameters":{"_controller":"\\Eccube\\Controller\\Admin\\Content\\FileController::index","_route":"admin_content_file"},"request_uri":"http://localhost/sample/admin/content/file_manager"} []
[2018-05-05 18:24:07] eccube.INFO: < 404 [] []
[2018-05-05 18:24:07] eccube.ERROR: Symfony\Component\HttpKernel\Exception\NotFoundHttpException: No route found for "GET /index_dev.php/" (uncaught exception) at C:\xampp\htdocs\sample\vendor\symfony\http-kernel\EventListener\RouterListener.php line 159 {"exception":"[object] (Symfony\\Component\\HttpKernel\\Exception\\NotFoundHttpException(code: 0): No route found for \"GET /index_dev.php/\" at C:\\xampp\\htdocs\\sample\\vendor\\symfony\\http-kernel\\EventListener\\RouterListener.php:159, Symfony\\Component\\Routing\\Exception\\ResourceNotFoundException(code: 0): No routes found for \"/index_dev.php/\". at C:\\xampp\\htdocs\\sample\\vendor\\symfony\\routing\\Matcher\\UrlMatcher.php:98)"} []
[2018-05-05 18:23:09] eccube.DEBUG: Notified event "kernel.terminate" to listener "Symfony\Component\HttpKernel\EventListener\ProfilerListener::onKernelTerminate". [] []
[2018-05-05 18:23:09] eccube.DEBUG: Notified event "kernel.terminate" to listener "closure". [] []
[2018-05-05 18:23:09] eccube.DEBUG: Notified event "kernel.terminate" to listener "closure". [] []
[2018-05-05 18:23:09] eccube.DEBUG: Notified event "kernel.terminate" to listener "closure". [] []
[2018-05-05 18:23:09] eccube.DEBUG: Notified event "kernel.terminate" to listener "Eccube\EventListener\TransactionListener::onKernelTerminate". [] []
[2018-05-05 18:23:09] eccube.DEBUG: KernelEvents::TERMINATE _profiler [] []