PHP, Symfony, Twig – XSS security

https://stackoverflow.com/questions/6816787/json-php-to-javascript-safe-or-not#answer-30949113

https://stackoverflow.com/questions/6816787/json-php-to-javascript-safe-or-not/6817147#6817147

https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html#html-entity-encoding

https://stackoverflow.com/questions/12062146/is-json-encode-sufficient-xss-protection