How are you starting your repl?

I use lein repl and from there (figwheel.main.api/start ...)

Piggieback is added to your repl-options middleware in your project.clj?

I actually had :nrepl-middleware in the wrong place in my project.clj, now I fixed it by nesting it in :repl-options. Evaluation from vim-fireplace now works, although I'm still getting code in "out" and 404s in the browser console. This is my project.clj now (I'm trying the flappy bird demo with updated deps): https://pastebin.com/rNsGgxvZ

https://ibin.co/4UrqhlHNeHOI.png the errors are for the files that I'm finding in "out"

Can you paste the fig build config please?

The only thing I changed from this repo is project.clj: https://github.com/bhauman/flappy-bird-demo-new

build config (flappy.cljs.edn) is just {:main flappy-bird-demo.core}

I tried adding the :output-dir option but it didn't affect the code in "out"