Failed to load resource: net::ERR_ACCESS_DENIED on CSS

[TDurrr1]

(I commented on Lighthouse issue #9038 with this issue as well, but it had already been closed. I believe this is the first time I’ve ever reported an issue with anything on Github, so if this isn’t the way it’s done, let me know and I’d be happy to fix it.)

Description

On web.dev/measure, using https://monicajean.photography as the URL, I receive a 92 instead of a 100 for best practices because of the following two browser errors which “were logged to the console”:

URL	Description
/stylesheets/main.css (monicajean.photography)	Failed to load resource: net::ERR_ACCESS_DENIED
/stylesheets/print.css (monicajean.photography)	Failed to load resource: net::ERR_ACCESS_DENIED

When I run Chrome’s built-in Lighthouse tests, I do not receive these errors, nor do I have any issues while navigating to the site itself, nor clicking straight through to the stylesheets. I wouldn’t expect to see them here either.

To Reproduce

1. On web.dev/measure, enter https://monicajean.photography for the URL and click Run Audit.
2. In the results, the best practices score is 92. An error labeled “Browser errors were logged to the console” is listed.

Expected Behavior

1. On web.dev/measure, enter https://monicajean.photography for the URL and click Run Audit.
2. In the results, the best practices score is 100. No console errors were logged, so this issue is not listed.

[connorjclark]

web.dev uses Lightrider, which runs on internal Google services. Is is possible that your site employs some "bot detection", and is blocking these requests?

[TDurrr1]

Would my robots.txt be the culprit then? Otherwise, I’m pretty sure I don’t have anything like that.

…

On Wed, Sep 25, 2019, 5:40 PM Connor Clark ***@***.***> wrote: web.dev uses Lightrider, which runs on internal Google services. Is is possible that your site employs some "bot detection", and is blocking these requests? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#9739?email_source=notifications&email_token=AFAIZBLLMKDIHTUECYGHP63QLPSE5A5CNFSM4I2RDGZ2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7TUU3Q#issuecomment-535251566>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFAIZBIFVGME3YID2H4URW3QLPSE5ANCNFSM4I2RDGZQ> .

[connorjclark]

No, that wouldn't affect anything.

I tried running against https://monicajean.photography/stylesheets/main.css too, and that worked, which was surprising.

[TDurrr1]

Interesting update: I was trying out adding a Cache-Control: public, max-age=600 header to every request, and now my best practices score is 100. It’s still 92 without the header, as well as when using private.

[TDurrr1]

Never mind, I guess—it worked a few times, but now I’m back down to 92. What does appear to work, however, is adding a cachebuster to the URL in conjunction with the Cache-Control header.

[naveedahmed1]

I am also having same issue when testing my website https://www.mustakbil.com on web.dev

[ghost]

Experiencing the same issue on https://apps.rodel.co.za. When I visit the site, there are no errors.

URL	Description
…js/validator.js (apps.rodel.co.za)	Failed to load resource: net::ERR_ACCESS_DENIED
…flatly/template.css?v=9 (apps.rodel.co.za)	Failed to load resource: net::ERR_ACCESS_DENIED
…css/font-awesome.css (apps.rodel.co.za)	Failed to load resource: net::ERR_ACCESS_DENIED
…css/bootstrap-select.css (apps.rodel.co.za)	Failed to load resource: net::ERR_ACCESS_DENIED
…css/component.css (apps.rodel.co.za)	Failed to load resource: net::ERR_ACCESS_DENIED
…js/jquery.js (apps.rodel.co.za)	TypeError: $(...).validator is not a function at HTMLDocument.<anonymous> (https://apps.rodel.co.za/ui/js/main_form_validation.js?v=9:26:15) at j (https://apps.rodel.co.za/ui/js/jquery.js:2:29999) at k (https://apps.rodel.co.za/ui/js/jquery.js:2:30313)

[exterkamp]

This is resolved now 🎉

Read the summary post mortem in #9902 (comment)