last attempt.

src/clj/auto_ap/graphql/ledger.clj

@@ -547,9 +547,9 @@
       :journal_entries (reduce
                         (fn [[acc last-je] je]
                           (let [next-je (assoc je :running_balance
-                                               (- (+ (:running_balance last-je 0.0)
-                                                     (:debit je 0.0))
-                                                  (:credit je 0.0)))]
+                                               (- (+ (or (:running_balance last-je 0.0) 0.0)
+                                                     (or (:debit je 0.0) 0.0))
+                                                  (or (:credit je 0.0) 0.0)))]
                             [(conj acc next-je) next-je]))
                         []
                         journal-entries)})})