the launch command was introduced as of Tutor v15, so for any version up to (and including) 14.2.3 you’ll use quickstart instead - see: tutor/README.rst at v13.3.1 · overhangio/tutor · GitHub
the launch command was introduced as of Tutor v15, so for any version up to (and including) 14.2.3 you’ll use quickstart instead - see: tutor/README.rst at v13.3.1 · overhangio/tutor · GitHub