Runtime issue: Result for unknown rule. You may be running mismatch axe-core versions

[jlk4p]

I was using the userflow testing (beta) feature on a page that contained an iframe embedded "e-book" reader (first button worked) that requires checking out the book for 2 hours. Once I clicked on the 2 hour checkout button (second button) the error below appears. Unfortunately these buttons (the e-book viewer/checkout) are behind a VPN. I could capture a video recording if this would be helpful. The iframed content is under the same general domain as the page it is embedded in. It also appears that the iframe content refreshes automatically though I don't know the frequency.

axe-core version: 4.10.2
axe-extension version: 4.97.4

Error: Result for unknown rule. You may be running mismatch axe-core versions
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:471080
    at Array.map (<anonymous>)
    at e.value (chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:471010)
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:476036
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:103752
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:113284
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:103752
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:113216
    at chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/axe-versions/latest/axe.js:2:109877
    at post (chrome-extension://lhdoppojpmngadmnindnejefpokejbdd/content.bundle.js:2:52118)

[jlk4p]

Adding a screenshot of the content that loaded in the iframe when this error was generated in axe DevTools.

[straker]

Thanks for the issue. Without being able to look at the page it'll be difficult to diagnose the problem. However, a common cause we see with this type of message is that the page / iframe loads some JavaScript code that modifies native JavaScript functions / features in noncompatible ways. See #4538

[jlk4p]

It's not a problem if you cannot do anything. I just clicked the link when the bug occurred and it created this issue for submission. The application we forked for use at our institution (https://caltechlibrary.github.io/dibs/index.html) I'm told uses lots of Javascript. I will just focus on manual testing of it.

Thanks for following up.