Angular 4 versus angular 16 stater code source

Good morning Mosh Hamedani , i am following along with the course and i am using version 16 of angular in the section of the course related to authentification , i cannot launch the server since it does not find the angular.json file but the angulor-cli.json instead .Do i need to recreate the solution and copy-paste existing content inside it please? Best regards.