几天前执行 yum upgrade 后，我的 Django 项目出现以下错误
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/home/joincic/GeoRouting/GeoRouting_2/lib64/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File …