minor fix

app/mainwindow.py

@@ -1882,13 +1882,14 @@ class MainWindow(FrontWindow):
         self._current_line_id = res['id']
         self.add_sale_line(res)
         self._sale_line['product'] = product
-        print(product)
         self._products[product['id']] = product
 
         self.update_total_amount()
         self.set_state('add')
 
     def _check_stock_quantity(self, product, request_qty=None):
+        if not isinstance(product['quantity'], (str, int, float, Decimal)):
+            return True
         qty_ = Decimal(product['quantity'])
         if self._password_admin:
             if (request_qty and qty_ < request_qty) or (qty_ <= 0):

app/proxy.py

@@ -82,7 +82,10 @@ class FastModel(object):
         route = self.get_route('model_method')
         data = json.dumps(args_, default=encoder)
         res = requests.post(route, data=data)
+        try:
             data = res.json()
+        except ValueError:
+            print(res.text)
         return data