se crea legal monetary total

FossilOrigin-Name: 8ae3dfadfe9b90b8cc5ad59d2a73f4c8a987c5aac498573e56754a2d32e9e2ae

facho/fe/form/__init__.py

@@ -99,7 +99,7 @@ class Amount:
             return self.fromNumber(val)
         if isinstance(val, Amount):
             return val
-        raise TypeError("cant cast to amount")
+        raise TypeError("cant cast %s to amount" % (type(val)))
     
     def __add__(self, rother):
         other = self._cast(rother)