Does anyone know what could be causing this:

app:cljs.user=> (require '[re-frame.core :as re-frame])
nil
app:cljs.user=> @reframe.db/app-db
Execution error (NullPointerException) at figwheel-sidecar.cljs-utils.exception-parsing/blank-line-column-prefix (exception_parsing.clj:152).

that looks like an error in figwheels exception parsing