Add extra error handling in Nordigen balances

handler/sinks/nordigen.py

@@ -450,6 +450,9 @@ class Nordigen(util.Base):
         parsed = obj.to_dict()
         total = 0
         currency = None
+        if "balances" not in parsed:
+            self.log.error(f"No balances: {parsed}")
+            return (False, False)
         for entry in parsed["balances"]:
             if currency:
                 if not currency == entry["balanceAmount"]["currency"]: