Clojurians Log v2

Anybody has a hint on why this error would happen for one of the people starting our leiningen-based project?

nREPL server started on port 59689 on host 127.0.0.1 - 
Exception in thread "nREPL-session-10b9f94a-428b-429c-9ed7-4e61ff12304f" java.lang.IllegalArgumentException: No implementation of method: :send of protocol: #'nrepl.transport/Transport found for class: cider.nrepl.middleware.track_state$make_transport$reify__85791
	at clojure.core$_cache_protocol_fn.invokeStatic(core_deftype.clj:584)
	at clojure.core$_cache_protocol_fn.invoke(core_deftype.clj:576)
	at nrepl.transport$eval76374$fn__76392$G__76365__76399.invoke(transport.clj:23)
	at nrepl.middleware.print$send_nonstreamed.invokeStatic(print.clj:157)
	at nrepl.middleware.print$send_nonstreamed.invoke(print.clj:138)
	at nrepl.middleware.print$printing_transport$reify__76906.send(print.clj:174)
	at nrepl.middleware.caught$caught_transport$reify__76941.send(caught.clj:58)
	at nrepl.middleware.print$replying_PrintWriter$fn__76867.invoke(print.clj:115)
	at nrepl.middleware.print.proxy$java.io.Writer$ff19274a.write(Unknown Source)
	at java.base/java.io.BufferedWriter.flushBuffer(BufferedWriter.java:120)
	at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:256)
	at java.base/java.io.PrintWriter.flush(PrintWriter.java:396)
	at nrepl.middleware.interruptible_eval$evaluate.invokeStatic(interruptible_eval.clj:136)
	at nrepl.middleware.interruptible_eval$evaluate.invoke(interruptible_eval.clj:56)
	at nrepl.middleware.interruptible_eval$interruptible_eval$fn__77017$fn__77021.invoke(interruptible_eval.clj:152)
	at clojure.lang.AFn.run(AFn.java:22)
	at nrepl.middleware.session$session_exec$main_loop__77087$fn__77091.invoke(session.clj:218)
	at nrepl.middleware.session$session_exec$main_loop__77087.invoke(session.clj:217)
	at clojure.lang.AFn.run(AFn.java:22)
	at java.base/java.lang.Thread.run(Thread.java:835)

Some weird behavior I don't understand running in gitlab CI: running tests with lein update-in :local-repo str ".m2' -- test and caching the .m2 directory, lein caches all the dependencies but doesn't cache plugins' dependencies Any ideas what's going on here?