page.evaluate: TypeError: Cannot read properties of null (reading 'sheet') at serializeCSSOM about cli HOT 5 CLOSED

@branislav-remen can you share a reproducible html page with shadow dom?

for example:
https://www.axa.ch/en/myaxa/company-registration.html#/

Heading (on top of the page) and Button (on bottom) use shadow dom.
Details about components used on this page can be found here: https://github.com/axa-ch-webhub-cloud/pattern-library

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@branislav-remen can you share a reproducible html page with shadow dom?

from cli.

@branislav-remen can you give v1.19.1-alpha.0 a try?

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@itsjwala it works with v1.19.1-alpha.0 👍 Thank you. 👏

But I see some warnings not related to the topic of this issue:

1. [percy] Heads up! The current version of @percy/cli is more than 10 releases behind! 1.19.1-alpha.0 -> 1.19.0-alpha.0 - This message is confusing 😄
2. Stylesheet related warnings, but screenshots in Percy looks correctly (1:1 with real website).

Running 24 tests using 1 worker

     1 [chromium] › src/tests/visualRegression.spec.ts:28:1 › Registrations page
[percy] Snapshot taken: Registrations page-card
[percy] Encountered snapshot serialization warnings:
[percy] - stylesheet with attributes - [ data-name: axa-table-myaxa ] - was not serialized
  ✓  1 [chromium] › src/tests/visualRegression.spec.ts:28:1 › Registrations page (9s)
     2 [chromium] › src/tests/visualRegression.spec.ts:46:1 › Add Main Registration page
[percy] Encountered snapshot serialization warnings:
[percy] - stylesheet with attributes - [ data-name: axa-fieldset-myaxa ] - was not serialized
[percy] - stylesheet with attributes - [ data-name: axa-radio-myaxa ] - was not serialized
  ✓  2 [chromium] › src/tests/visualRegression.spec.ts:46:1 › Add Main Registration page (5s)
...

how can I rid of this second warning?

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Hey @branislav-remen glad this is fixed for you.

1. we store Github releases in a file located at node_modules/@percy/cli/.releases (for Unix), I had forgotten to draft a release yesterday, just remove this cache file, and it will not show this warning message.

rm node_modules/@percy/cli/.releases

2. As part of v1.19.1-alpha.0 release we'd added this serialization warning message, currently there is no way via a flag to disable this warning message.

I'm closing this issue as the original 🐛 is fixed, please feel free to open another issue/discussion thread if you face any problems, and thanks for reporting the bug 😄 !

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