diff --git a/fir_ser/api/utils/app/iossignapi.py b/fir_ser/api/utils/app/iossignapi.py
index 50fdee0..2fdac42 100644
--- a/fir_ser/api/utils/app/iossignapi.py
+++ b/fir_ser/api/utils/app/iossignapi.py
@@ -145,7 +145,7 @@ class ResignApp(object):
             for file in [self.app_dev_p12, self.app_dev_p12 + '.pwd', self.my_local_key, self.app_dev_pem]:
                 if os.path.exists(file + '.bak'):
                     os.remove(file + '.bak')
-            result["err_info"] = e
+            result["err_info"] = str(e)
             if 'mac verify failure' in str(e):
                 result["err_info"] = 'p12 导入密码错误，请检查'
             return False, result
diff --git a/fir_ser/api/utils/app/supersignutils.py b/fir_ser/api/utils/app/supersignutils.py
index b611020..6aaf93d 100644
--- a/fir_ser/api/utils/app/supersignutils.py
+++ b/fir_ser/api/utils/app/supersignutils.py
@@ -4,24 +4,29 @@
 # author: liuyu
 # date: 2020/3/6
 
-import uuid, xmltodict, os, logging, time
-
+import logging
+import os
+import time
+import uuid
+import xmltodict
 import zipfile
+
+from django.core.cache import cache
+from django.db.models import Sum
+
+from api.models import APPSuperSignUsedInfo, AppUDID, AppIOSDeveloperInfo, AppReleaseInfo, Apps, APPToDeveloper, \
+    UDIDsyncDeveloper, DeveloperAppID, DeveloperDevicesID, IosDeveloperPublicPoolBill
+from api.utils.app.iossignapi import ResignApp, AppDeveloperApiV2
+from api.utils.baseutils import file_format_path, delete_app_profile_file, get_profile_full_path, format_apple_date, \
+    get_format_time, make_app_uuid, make_from_user_uuid
 from api.utils.response import BaseResponse
 from api.utils.serializer import BillAppInfoSerializer, BillDeveloperInfoSerializer, BillUdidInfoSerializer
-from fir_ser.settings import SUPER_SIGN_ROOT, MEDIA_ROOT, MOBILE_CONFIG_SIGN_SSL, MSGTEMPLATE
-from api.utils.app.iossignapi import ResignApp, AppDeveloperApiV2
-from api.models import APPSuperSignUsedInfo, AppUDID, AppIOSDeveloperInfo, AppReleaseInfo, Apps, APPToDeveloper, \
-    UDIDsyncDeveloper, DeveloperAppID, DeveloperDevicesID, IosDeveloperPublicPoolBill, UserInfo
 from api.utils.storage.caches import del_cache_response_by_short, send_msg_over_limit, check_app_permission, \
     consume_user_download_times_by_app_obj
+from api.utils.storage.storage import Storage
 from api.utils.utils import delete_app_to_dev_and_file, send_ios_developer_active_status, delete_local_files, \
     download_files_form_oss, get_developer_udided
-from api.utils.baseutils import file_format_path, delete_app_profile_file, get_profile_full_path, format_apple_date, \
-    get_format_time, make_app_uuid, make_from_user_uuid
-from api.utils.storage.storage import Storage
-from django.core.cache import cache
-from django.db.models import Sum
+from fir_ser.settings import SUPER_SIGN_ROOT, MEDIA_ROOT, MOBILE_CONFIG_SIGN_SSL, MSGTEMPLATE
 
 logger = logging.getLogger(__name__)