1) [firefox] › test/filebrowser.spec.ts:32:7 › File Browser › Select one file ──────────────────── Error: expect(locator).toBeVisible() Locator: getByRole('toolbar').getByText('Download') Expected: visible Received: undefined Call log: - expect.toBeVisible with timeout 5000ms - waiting for getByRole('toolbar').getByText('Download') 39 | 40 | ['Rename', 'Open', 'Download', 'Move to Trash'].forEach(async (text) => { > 41 | expect(toolbar.getByText(text)).toBeVisible(); | ^ 42 | }); 43 | }); 44 | at forEach (/home/runner/work/notebook/notebook/ui-tests/test/filebrowser.spec.ts:41:39) at /home/runner/work/notebook/notebook/ui-tests/test/filebrowser.spec.ts:40:53

2) [firefox] › test/notebook.spec.ts:24:7 › Notebook › Title should be rendered ────────────────── Error: "apiRequestContext.fetch: Target page, context or browser has been closed Call log: - → POST http://localhost:8888/api/sessions?1744012415701 - user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0 - accept: */* - accept-encoding: gzip, deflate, br, zstd - host: localhost:8888 - accept-language: en-US - content-type: text/plain;charset=UTF-8 - content-length: 172 - referer: http://localhost:8888/notebooks/test-notebook-Notebook-Title-should-be-rendered-firefox/example.ipynb - x-xsrftoken: 2|1b4dc031|f91ba7149dacb0b51ebb064f6e27586a|1744012412 - origin: http://localhost:8888 - sec-fetch-dest: empty - sec-fetch-mode: cors - sec-fetch-site: same-origin - connection: keep-alive - cookie: username-localhost-8888="2|1:0|10:1744012412|23:username-localhost-8888|200:eyJ1c2VybmFtZSI6ICI3ODYwODIzMzA3NWY0ODdmYmIyNDY5NWM5YWE1ZTdjMiIsICJuYW1lIjogIkFub255bW91cyBIZWdlbW9uZSIsICJkaXNwbGF5X25hbWUiOiAiQW5vbnltb3VzIEhlZ2Vtb25lIiwgImluaXRpYWxzIjogIkFIIiwgImNvbG9yIjogbnVsbH0=|248021400dbf115bd09644e8b0cbcf94549bdf52048ea17c40ad6591eaba9a5a"; _xsrf=2|1b4dc031|f91ba7149dacb0b51ebb064f6e27586a|1744012412 " while running route callback. Consider awaiting `await page.unrouteAll({ behavior: 'ignoreErrors' })` before the end of the test to ignore remaining routes in flight. at /home/runner/work/notebook/notebook/ui-tests/node_modules/@jupyterlab/galata/src/galata.ts:961:49

The Ubuntu-20.04 brownout takes place from 2025-02-01. For more details, see https://github.com/actions/runner-images/issues/11101

You are using a frozen webkit browser which does not receive updates anymore on ubuntu20.04-x64. Please update to the latest version of your operating system to test up-to-date browsers.