Hi, I wanted to write a function that finds data (using datalevin as a document store now) by db/id. But below code doesn't seem to work, which I don't understand why. Can someone give me some clue.

(defn find-obj-by-db-id [conn db-id]
  (ffirst
   (d/q '[:find (pull ?e [*])
          :in $ ?dbid
          :where
          [?e :db/id ?dbid]]
        (d/db conn)
        db-id)))