Codesandbox-client: 403 after adding a package

[xqwtsz]

🐛 bug report

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• [x] I have read the
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• [x] I agree to follow the
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  that this project adheres to.
• [x] I have searched the issue tracker for an issue that matches the one I want
  to file, without success.

Description of the problem

Getting a CORS error then a 403 after adding any package, its styled-components in the linked sandbox.

How has this issue affected you? What are you trying to accomplish?

Cant run the sandbox after adding packages.

To Reproduce

Go to the link.

Link to sandbox: link

Your Environment

| Software | Name/Version |
| ---------------- | ------------ |
| Сodesandbox |
| Browser | Firefox 82.0.2 (64-bit)
| Operating System | Windows 10

[xqwtsz]

Screenshot (removed)

[sannek]

Hi!
Thanks for your bug report. Could you confirm that this is still happening for you? I cannot see any CORS errors when I open this sandbox in any browser.

[xqwtsz]

Hi!
Thanks for your bug report. Could you confirm that this is still happening for you? I cannot see any CORS errors when I open this sandbox in any browser.

Hi @sannek!

Still happening on my Windows machine using Firefox, no problems on my Mac in any browser.

[sannek]

Ah - that explains why I can't reproduce it! Let me see if anyone on our team has a Windows machine where they can investigate. To be continued...

[SaraVieira]

Hey!

I am the windows carrying person but I was on vacation

I can open it on my windows machine

DOes it still happen in your computer?

[xqwtsz]

DOes it still happen in your computer?

Hi! It still does. I will try disabling all security options one by one to find out which one is causing it then.

[SaraVieira]

Thank you!

Let me know if it fixes it

[xqwtsz]

Got it! It was not Firefox itself but DuckDuckGo Privacy Essentials addon. 🤦 Weirdly it doesn't affect anything on Chrome or @ my macOS - Firefox. Thank you for the help! @sannek & @SaraVieira

[SaraVieira]

That makes sense, sometimes the blocked things are just random

I am glad we figured this out :D