title: ModuleNotFoundError: No module named 'ckeditor_uploader' in django
body: <p>I'm trying to integrate a ckeditor in my django blog application. I followed all the instructions in the github page of django-ckeditor precisely.
  i.e. installed, added to installed apps, added in urls, collected staticfiles, configured settings in settings.py and imported ckeditor.fields in models whenever necessary. When I try to make migration or run, I get this error as below:</p>
  
  <pre><code>Watching for file changes with StatReloader
  Exception in thread django-main-thread:
  Traceback (most recent call last):
    File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
      self.run()
    File "/usr/lib/python3.6/threading.py", line 864, in run
      self._target(*self._args, **self._kwargs)
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 54, in wrapper
      fn(*args, **kwargs)
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
      autoreload.raise_last_exception()
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 77, in raise_last_exception
      raise _exception[1]
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 337, in execute
      autoreload.check_errors(django.setup)()
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 54, in wrapper
      fn(*args, **kwargs)
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/apps/registry.py", line 91, in populate
      app_config = AppConfig.create(entry)
    File "/home/kush/projects/venv/lib/python3.6/site-packages/django/apps/config.py", line 90, in create
      module = import_module(entry)
    File "/home/kush/projects/venv/lib/python3.6/importlib/__init__.py", line 126, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "&lt;frozen importlib._bootstrap&gt;", line 994, in _gcd_import
    File "&lt;frozen importlib._bootstrap&gt;", line 971, in _find_and_load
    File "&lt;frozen importlib._bootstrap&gt;", line 953, in _find_and_load_unlocked
  ModuleNotFoundError: No module named 'ckeditor_uploader'
  </code></pre>
  
  <p>I cant seem to figure out whats wrong here. Anyone here been with a similar issue?? Or just could show me some light here..</p>