Puppeteer: JSHandle is disposed!

The JSHandle has been disposed.

Error message

JSHandle is disposed!

How this error happens

Disposing a handle releases its browser-side reference. Passing that handle into a later evaluation reuses a released reference.

The snippets use an open Puppeteer page named page.

const handle = await page.evaluateHandle(() => {
    return {
        count: 3,
    };
});

await handle.dispose();

await page.evaluate(
    (value) => value.count,
    handle
);

How to fix

Use the handle before disposing it, and keep cleanup in a finally block.

const handle = await page.evaluateHandle(() => {
    return {
        count: 3,
    };
});

try {
    const count = await page.evaluate(
        (value) => value.count,
        handle
    );

    console.log(count);
} finally {
    await handle.dispose();
}

Things to keep in mind

Navigation can also invalidate an otherwise undisposed handle. Recreate it in the new document.

All Puppeteer errors