Clojurians Log v2

Any tips on using clerk and libpython-clj together? Currently getting an error from the viewer trying to look at a simple numerical result:

[{:type java.lang.AssertionError,
   :message "Assert failed: n must be a number?\n(number? n)",
   :at
   [nextjournal.clerk.viewer$bounded_count_opts
    invokeStatic
    "viewer.cljc"
    308]}]
...