(Created on )
Puppeteer: Cannot wait for device prompt through detached session!
Waiting for a device prompt uses a detached session.
Waiting for a device prompt uses a detached session.
Error message
Cannot wait for device prompt through detached session!
How this error happens
A device chooser depends on a live page session. Closing the page before waiting the prompt removes that session.
Use an open Chrome/CDP page named page whose #connect-device control requests a supported device prompt. Run the fix on a fresh page.
await page.close();
await page.waitForDevicePrompt();
How to fix
Complete or cancel the chooser while the page is alive, then close the page.
const waiting = page.waitForDevicePrompt();
await page.click(
"#connect-device"
);
const prompt = await waiting;
await prompt.cancel();
await page.close();
Things to keep in mind
The exact error depends on whether the page closure is observed before or during the operation. Reopening a page does not revive an old prompt; wait for a new prompt on the new page.