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expecting an array or an iterable object but got [object Null] using playwright-webkit

See original GitHub issue

Current behavior

I am experiencing a couple of errors just using the new browser experimental feature.

TypeError expecting an array or an iterable object but got [object Null] Because this error occurred during a before each hook we are skipping all of the remaining tests.
TypeError expecting an array or an iterable object but got [object Null]

Desired behavior

Should run my tests without problems.

Test code to reproduce

https://github.com/JoanEsquivel/cypress-webkit

Just install dependencies.
Open the test runner
Run for example:

cypress/e2e/1-helloworld.ct.ts
cypress/e2e/10-checkboxes.cy

Cypress Version

10.8.0

Node version

v16.13.0

Operating System

Windows 10

Debug Logs

TypeError
expecting an array or an iterable object but got [object Null]
View stack trace
 Print to console
TypeError: expecting an array or an iterable object but got [object Null]
    automation@http://uitestingplayground.com/__cypress/runner/cypress_runner.js:153782:63
    @[native code]

Other

I want to say that this could be my mistake doing a wrong usage of typescript or some library. However, it is weird that this issue is only happening for webkit.

Also I see the same error from “bestu” in the discord channel General/general.

Appreciate your help.

Issue Analytics

State:
Created a year ago
Comments:11 (4 by maintainers)

Top GitHub Comments

1reaction

flotwigcommented, Oct 12, 2022

This issue has been fixed in #23442. Please look out for this fix in the next release of Cypress (October 25th)

1reaction

Elecashcommented, Sep 15, 2022

@JoanEsquivel @nagash77 I’m also getting the same error although I’m not using experimentalSessionAndOrigin. Could this be a different error?

I don’t have a repo to reproduce the error, but if needed I might try to build one if needed.

Btw, this error is not consistent for me, sometimes it does fails, sometimes it doesn’t.

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