How to correctly include a custom component in a plotly dash project

I am trying to get a custom component included in my plotly dash project. I followed the cookiecutter example, and successfully ran npm run build to build the component. Assuming that the component was in some folder my_component, I copied the build folder my_component/my_component into apps/components/my_component. I then ran my server with python3 apps/ This is the error I received when trying to include with a from components.my_component import MyComponent:

Traceback (most recent call last):
  File "apps/", line 27, in <module>
    app.run_server(debug=True, host="", port=8000, ssl_context="adhoc")
  File "/home/x/.local/lib/python3.6/site-packages/dash/", line 1540, in run_server
  File "/home/x/.local/lib/python3.6/site-packages/dash/", line 1347, in enable_dev_tools
    for x in list(ComponentRegistry.registry) + ["dash_renderer"]
  File "/home/x/.local/lib/python3.6/site-packages/dash/", line 1345, in <listcomp>
    for package in (
AttributeError: 'NoneType' object has no attribute 'filename'

Am I missing something in the custom component development process?

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