Clojurians Log v2

I’m trying to use (figwheel.main.api/start {:mode :serve} "dev") to start a build on the REPL. The build does succeed, but I’m getting the following error from the figwheel server process

Execution error (ArityException) at figwheel.server.jetty-websocket/async-websocket-configurator$fn$fn (jetty_websocket.clj:116).
Wrong number of args (2) passed to: ring.adapter.jetty/async-proxy-handler

Here’s my figwheel config

{:open-url false
 :css-dirs ["resources/public"]}

Any idea on what’s wrong? Am I missing some config for ring?