很多时候我在启动python服务器时遇到此错误。当我更改任何文件并且服务器再次启动时，也会发生这种情况。
我尝试删除环境并重新创建环境，但是仍然存在相同的错误。
Linux上的Python 3.5.2（默认值，2018年11月12日，13：43：14）[GCC 5.4.0 20160609]
的Django：2.2.1
/home/satyam/Code/myproject/myproject_apps/invoice/services/excel_service.py changed, reloading.
Watching for file changes with StatReloader
Performing system checks...
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/template/utils.py", line 66, in __getitem__
return self._engines[alias]
KeyError: 'django'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/usr/lib/python3.5/threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/home/satyam/Code/environments/ebapps/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 117, in …