问题
Whenever I open a Colaboratory Document I always get the same error message:
NotSupportedError: Failed to register a ServiceWorker: The user denied permission to use Service Worker.
This is happening on chrome and my browser allows for ServiceWorkers (chrome://serviceworker-internals/), what's going on? Because the thing is all the code still runs.
回答1:
Colab's output frames use service workers to support some functionality such as displaying richer graphs (Altair and Plot.ly).
The error message indicates that third-party cookies are disabled in your browser, this will prevent the browser service workers from working. The option should be configured under chrome://settings/content/cookies.
回答2:
I tried white-listing in chrome link (chrome://settings/content/cookies) the following:
https://[*.]googleusercontent.com:443
[*.]colab.research.google.com
Here it was the best approach, better than simply liberatin the 3rd part cookies Seems to work so on.
回答3:
Usually there are two causes for this error:
1- you didn't allow cookies on colab domain, so you need to change you browser settings
2- you are using an adblocker
来源：https://stackoverflow.com/questions/48285485/google-colaboratory-serviceworker-error-on-chrome