Console error: Refused to create a worker

Question

Console error: Refused to create a worker

chtenb opened this issue a year ago · 9 comments

I'm seeing errors in my dev console of the form:

[Report Only] Refused to create a worker from 'blob:http://magjac.com/dc63c696-2997-4d9b-adc6-b218f78ac6e3' because it violates the following Content Security Policy directive: "worker-src 'none'".

Not sure what concrete problems they cause, but it sounds unintentional.

Answer 1 · 2023-10-14T20:23:36.000Z

Sorry for the delay. What platform and browser are you on?

Answer 2 · 2023-10-15T07:05:16.000Z

Windows/Chrome

Answer 3 · 2024-10-03T19:02:11.000Z

Sorry for the even more delay. I cannot reproduce this on Windows 10 with Chrome version 129.0.6668.71 when accessing https://magjac.com/graphviz-visual-editor/ or http://magjac.com/graphviz-visual-editor/.

Can you still reproduce this?

Answer 4 · 2024-10-03T19:08:47.000Z

Yes. After some clicking around I found that the middle mouse button produced another error:

Answer 5 · 2024-10-03T19:15:11.000Z

Thanks. Which version of Windows and which version of Chrome?

The other error is probably #251.

Answer 6 · 2024-10-03T19:33:01.000Z

129.0.6668.89 on windows 11

Answer 7 · 2024-10-04T18:09:59.000Z

I've added Content-Security-Policy: worker-src blob:; on the server. Can you try again? I suspect it has to do with Windows 11, but I cannot test that since I don't have such a machine.

Answer 8 · 2024-10-05T09:51:31.000Z

Still same error message

Answer 9 · 2024-10-06T18:28:00.000Z

OK. Thanks. I think I'll have to put this issue on the back burner until I can get my hands on a Windows 11 machine.