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https://stackoverflow.com/questions/19892853/symfony2-didnt-show-error-message-after-form-login-submit
https://symfony.com/doc/current/security/form_login_setup
https://symfony.com/doc/current/controller/error_pages.html
https://symfony.com/doc/3.2/console/logging.html
https://symfony.com/doc/3.3/security/form_login_setup.html
https://github.com/symfony/symfony/issues/21308
https://rollbar.com/guides/where-are-php-errors-logged/
https://symfonycasts.com/screencast/symfony-security/errors-logout
https://ourcodeworld.com/articles/read/222/how-to-display-all-or-single-errors-on-a-form-with-twig-or-in-the-controller-in-symfony-3
https://auth0.com/blog/creating-your-first-symfony-app-and-adding-authentication/
https://codereviewvideos.com/course/log-log-it-s-better-than-bad-it-s-good/video/10-tips-for-a-better-symfony-debug-log
https://devcenter.heroku.com/articles/php-logging
https://www.christophh.net/2013/10/17/log-to-error-log-in-symfony2/