(go) does not work in an Emacs CIDER REPL

[xonev]

• [x] I am reporting a bug or problem in Chestnut

Steps to reproduce:

• Create a new app using e.g. lein new chestnut portal +bidi +site-middleware +re-frame +garden
• Open emacs
• Run M-x cider-jack-in
• In the new REPL, run (go)
• Expected behavior: everything starts up as it does when running lein repl
• Actual behavior: it doesn't start up. I get the following logs in the REPL:

Figwheel: Starting server at http://0.0.0.0:3449
Figwheel: Watching build - app
Compiling build :app to "dev-target/public/js/compiled/portal.js" from ["src/cljs" "src/cljc" "dev"]...
2020-05-13 09:05:25.233:INFO:oejs.Server:nREPL-session-615f48b6-261f-41af-a884-25f509ecfee9: jetty-9.4.12.v20180830; built: 2018-08-30T13:59:14.071Z; git: 27208684755d94a92186989f695db2d7b21ebc51; jvm 12.0.1+12
2020-05-13 09:05:25.274:INFO:oejs.AbstractConnector:nREPL-session-615f48b6-261f-41af-a884-25f509ecfee9: Started ServerConnector@26edb3c6{HTTP/1.1,[http/1.1]}{0.0.0.0:10555}
2020-05-13 09:05:25.275:INFO:oejs.Server:nREPL-session-615f48b6-261f-41af-a884-25f509ecfee9: Started @32836ms
Successfully compiled build :app to "dev-target/public/js/compiled/portal.js" in 0.964 seconds.
Figwheel: Starting CSS Watcher for paths  ["resources/public/css"]
Started portal on http://localhost:10555
Garden: compiling #'portal.styles/body
Wrote: resources/public/css/body.css
Garden: watching 
Garden: watcher not running
Figwheel: Stopped watching CSS Watcher paths  ["resources/public/css"]
Figwheel: Stopped watching build - app
Figwheel: Stopping Websocket Server
2020-05-13 09:05:27.258:INFO:oejs.AbstractConnector:nREPL-session-615f48b6-261f-41af-a884-25f509ecfee9: Stopped ServerConnector@26edb3c6{HTTP/1.1,[http/1.1]}{0.0.0.0:10555}
Execution error (NullPointerException) at hawk.core/extract-paths-by-type$fn (core.clj:15).