fix a bug

fir_ser/api/views/download.py

@@ -82,6 +82,14 @@ class DownloadView(APIView):
                     appsuper_obj = APPSuperSignUsedInfo.objects.filter(app_id=release_obj.app_id).last()
                     if not appsuper_obj:
                         appsuper_obj = APPSuperSignUsedInfo.objects.last()
+
+                    if not appsuper_obj:
+                        file_path = settings.DEFAULT_MOBILEPROVISION.get("supersign").get('path')
+                        if os.path.isfile(file_path):
+                            response = FileResponse(open(file_path, 'rb'))
+                        else:
+                            response = FileResponse()
+                    else:
                         developer_obj = appsuper_obj.developerid
                         file_path = get_profile_full_path(developer_obj, release_obj.app_id)
                         if os.path.isfile(file_path):