Tests fail on [Cannot create property 'Symbol(ERR_PREPARED_FOR_SERIALIZATION)' on boolean 'true']

[Arcturus5404]

Current behavior

Currently some of our tests sometimes fail on
Cannot create property 'Symbol(ERR_PREPARED_FOR_SERIALIZATION)' on boolean 'true'

It seems like the error itself is swallowed somehow? or there is no error to begin with and there is something wrong with the error parsing?

Desired behavior

No to fail the tests, and log a helpful error message

Test code to reproduce

No idea how to reproduce this. We have cypress dashboard; those are the tests that are flaky right now.

Cypress Version

9.2.0

Other

No response

[mjhenkes]

It's likely that through some method the boolean true is being being thrown which causes our error serialization to fail itself here

We could handle boolean errors similar to how we handle strings here, but it's still unclear where and how 'true' is being thrown

[rafinskipg]

i'm getting this error too, and i don't understand why

[Arcturus5404]

I think it is because some Promise is rejecting with value true which is uncaught

[cypress-bot]

The code for this is done in cypress-io/cypress#20172, but has yet to be released.
We'll update this issue and reference the changelog when it's released.