title Miscellaneous - Symfony Certification Preparation List Back to index Miscellaneous Configuration (including DotEnv and ExpressionLanguage components) The Config Component - symfony.com Error handling How to Customize Error Pages - symfony.com Code debugging The Debug Component - symfony.com Deployment best practices How to Deploy a Symfony Application - symfony.com Process and Serializer components The Process Component - symfony.com The Serializer Component - symfony.com How to Use the Serializer - symfony.com Messenger component The Messenger Component Mime and Mailer component The Mime Component Filesystem and Finder components The Filesystem Component The Finder Component Lock component Web Profiler, Web Debug Toolbar and Data collectors How to Create a custom Data Collector - symfony.com Internationalization and localization (and Intl component) Internationalization - symfony.com Translations - symfony.com Using the Translator - symfony.com