I just started going through lucinia and facing this issue -
Caused by: java.lang.IllegalArgumentException: Must hint overloaded method: toArray
Maybe https://clojure.atlassian.net/browse/CLJ-2374 make sure you are on the latest clojure, and check to see what versions of rbb vector you are including
Can you trace that to a specific line or namespace?
Is it in Lacinia code or your application's code?