minor fix

app/main.py

@@ -1,18 +1,16 @@
 #!/usr/bin/env python
 # -*- coding: UTF-8 -*-
-import sys
 import os
 import logging
 import base64
 import time
 import traceback
 import threading
-import atexit
 from decimal import Decimal
 from datetime import datetime, timedelta
 from collections import OrderedDict
 from PySide6 import QtGui
-from PySide6.QtCore import Qt, QTimer, QThread
+from PySide6.QtCore import Qt
 from PySide6.QtWidgets import (
     QLabel, QHBoxLayout, QVBoxLayout,
     QWidget)
@@ -36,7 +34,7 @@ from .commons.custom_button import CustomButton
 from .threads import DoInvoice
 from .store import StoreView
 from .constants import (
-    PATH_PRINTERS, DELTA_LOCALE, STRETCH, alignRight, alignLeft, alignCenter,
+    DELTA_LOCALE, STRETCH, alignRight, alignLeft, alignCenter,
     alignHCenter, DIALOG_REPLY_NO, ZERO, RATE_CREDIT_LIMIT, CONVERSION_DIGITS,
     SALE_FIELDS, KIND_REST, KIND_RETAIL, DIALOG_REPLY_YES,
 )
@@ -1558,8 +1556,8 @@ class AppWindow(FrontWindow):
         sale = self.store.store
         if number:
             if type_doc in ['order', 'delivery', 'quotation']:
-                if number != sale.get('number'):
-                    sale_id = sale['id']
+                if number != sale.get('number') and sale.get('id'):
+                    sale_id = sale.get('id')
                 else:
                     sales = self.Sale.find([('number', '=', number)], fields=['id'])
                     sale = sales[0]