title: No module named 'django.contrib.staticfiles.templatetags'
body: <p>I have been breaking my head over this for a full day but can't figure out the problem. It happened after I copied my Django project from one PC to another.</p>
  
  <pre><code>Watching for file changes with StatReloader
  Exception in thread django-main-thread:
  Traceback (most recent call last):
    File "/Users/username/opt/anaconda3/lib/python3.7/threading.py", line 926, in _bootstrap_inner
      self.run()
    File "/Users/username/opt/anaconda3/lib/python3.7/threading.py", line 870, in run
      self._target(*self._args, **self._kwargs)
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
      fn(*args, **kwargs)
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
      autoreload.raise_last_exception()
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/utils/autoreload.py", line 76, in raise_last_exception
      raise _exception[1]
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/core/management/__init__.py", line 357, in execute
      autoreload.check_errors(django.setup)()
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
      fn(*args, **kwargs)
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/apps/registry.py", line 122, in populate
      app_config.ready()
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/contrib/admin/apps.py", line 24, in ready
      self.module.autodiscover()
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/contrib/admin/__init__.py", line 26, in autodiscover
      autodiscover_modules('admin', register_to=site)
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django/utils/module_loading.py", line 47, in autodiscover_modules
      import_module('%s.%s' % (app_config.name, module_to_search))
    File "/Users/username/opt/anaconda3/lib/python3.7/importlib/__init__.py", line 127, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "&lt;frozen importlib._bootstrap&gt;", line 1006, in _gcd_import
    File "&lt;frozen importlib._bootstrap&gt;", line 983, in _find_and_load
    File "&lt;frozen importlib._bootstrap&gt;", line 967, in _find_and_load_unlocked
    File "&lt;frozen importlib._bootstrap&gt;", line 677, in _load_unlocked
    File "&lt;frozen importlib._bootstrap_external&gt;", line 728, in exec_module
    File "&lt;frozen importlib._bootstrap&gt;", line 219, in _call_with_frames_removed
    File "/Users/saitohiromasa/opt/anaconda3/lib/python3.7/site-packages/django_summernote/admin.py", line 5, in &lt;module&gt;
      from django_summernote.widgets import SummernoteWidget, SummernoteInplaceWidget
    File "/Users/username/opt/anaconda3/lib/python3.7/site-packages/django_summernote/widgets.py", line 4, in &lt;module&gt;
      from django.contrib.staticfiles.templatetags.staticfiles import static
  ModuleNotFoundError: No module named 'django.contrib.staticfiles.templatetags'
  </code></pre>
  
  <p>In settings.py:</p>
  
  <pre><code>INSTALLED_APPS = [
      'django_summernote',
      'accounts.apps.AccountsConfig',
      'blogs.apps.BlogsConfig',
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
  ]
  </code></pre>
  
  <p>My Django version is 3.0
  What might be wrong here ? Please help me out. Much thanks!</p>