Harness status: Error

Test named 'No crash when accessing presenter associated with deleted presentation area.' specified 1 'cleanup' function, and 1 failed.

Error: action_sequence() is not implemented by testdriver-vendor.js
    at Object.action_sequence (https://xn--n8j6ds53lwwkrqhv28a.wpt.live/resources/testdriver.js:1636:19)
    at Object.action_sequence (https://xn--n8j6ds53lwwkrqhv28a.wpt.live/resources/testdriver.js:721:48)
    at Actions.send (https://xn--n8j6ds53lwwkrqhv28a.wpt.live/resources/testdriver-actions.js:99:26)
    at Test.<anonymous> (https://xn--n8j6ds53lwwkrqhv28a.wpt.live/delegated-ink/delete-presentation-area.html:18:77)