🚨 Error: Failed to read the 'cssRules' property from 'CSSStyleSheet': Cannot access rules

[ampprojectbot]

Details

Error report: link
First seen: Sep 29, 2021
Frequency: ~ 14,659/day

Stacktrace

Error: Failed to read the 'cssRules' property from 'CSSStyleSheet': Cannot access rules
    at cssRules (extensions/amp-animation/0.1/parsers/keyframes-extractor.js:38:18)
    at scanStyle (extensions/amp-animation/0.1/parsers/keyframes-extractor.js:18:22)
    at this (extensions/amp-animation/0.1/web-animations.js:467:41)
    at createKeyframes_ (extensions/amp-animation/0.1/web-animations.js:447:29)
    at callback (extensions/amp-animation/0.1/web-animations.js:604:10)
    at callback (extensions/amp-animation/0.1/web-animations.js:1004:19)
    at withVars (extensions/amp-animation/0.1/web-animations.js:602:18)
    at callback (extensions/amp-animation/0.1/web-animations.js:988:19)
    at withTarget (extensions/amp-animation/0.1/web-animations.js:597:16)

Notes

@dvoytenko modified extensions/amp-animation/0.1/parsers/keyframes-extractor.js:35-46 in #9623 (May 31, 2017)
@dvoytenko modified extensions/amp-animation/0.1/parsers/keyframes-extractor.js:16-18 in #9623 (May 31, 2017)
@alanorozco modified extensions/amp-animation/0.1/web-animations.js:467-467 in #27887 (Apr 21, 2020)
@dvoytenko modified extensions/amp-animation/0.1/web-animations.js:445-453 in #9614 (May 31, 2017)
@dvoytenko modified extensions/amp-animation/0.1/web-animations.js:604-610 in #9614 (May 31, 2017)
@dvoytenko modified extensions/amp-animation/0.1/web-animations.js:995-1009 in #9614 (May 31, 2017)
@dvoytenko modified extensions/amp-animation/0.1/web-animations.js:602-602 in #9614 (May 31, 2017)
@dvoytenko modified extensions/amp-animation/0.1/web-animations.js:988-989 in #9496 (May 24, 2017)
@dvoytenko modified extensions/amp-animation/0.1/web-animations.js:596-597 in #10451 (Jul 18, 2017)

Seen in:

• 01-07 Beta (1715)
• 01-07 Control (1715)
• 01-07 Experiment-B (1715)
• 01-07 Experimental (1715)
• 01-07 Stable (1715)
• 01-14 Nightly (1909)

Possible assignees: @alanorozco, @dvoytenko

/cc @ampproject/release-on-duty

[processprocess]

Appears to be similar to #35822