Hi all, does anyone know why I might be getting this error?

$ lein with-profile dev run -m clojure.main dev/scripts/figwheel.clj
OpenJDK 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likel
y be removed in a future release.
Warning: implicit hook found: lein-environ.plugin/hooks
Hooks are deprecated and will be removed in a future version.
Warning: implicit hook found: leiningen.less/activate
Hooks are deprecated and will be removed in a future version.
Error encountered performing task 'run' with profile(s): 'dev'
java.lang.IllegalArgumentException: Invalid javascript engine (javascript)
        at leiningen.less.engine$with_engine_STAR_.invokeStatic(engine.clj:26)

maybe something to do with my java version

java --version
openjdk 15.0.1 2020-10-20
OpenJDK Runtime Environment (build 15.0.1+9)
OpenJDK 64-Bit Server VM (build 15.0.1+9, mixed mode, sharing)

found a similar issue here: https://github.com/montoux/lein-less/issues/17