Puppeteer: Could not create typed array

PDF stream conversion did not produce a typed array.

Error message

Could not create typed array

How this error happens

PDF stream conversion completed without producing the byte array Puppeteer expected. This is a browser/protocol or stream-processing failure, not an invalid paper-format setting.

The failing snippet uses an open page in the affected environment. The correction uses an imported puppeteer instance.

await page.pdf({
    format: "A4",
});

How to fix

Use a compatible Chrome/CDP page, finish page work before printing, and keep the browser alive until the PDF bytes have been read.

const browser = await puppeteer.launch({
    browser: "chrome",
    protocol: "cdp",
});

try {
    const page = await browser.newPage();

    await page.setContent(
        "<h1>Report</h1><p>Ready to print.</p>"
    );

    const pdf = await page.pdf({
        format: "A4",
    });

    console.log(pdf.byteLength);
} finally {
    await browser.close();
}

Things to keep in mind

The first PDF call is valid; it only fails when the browser response or stream conversion has the condition described above. A new browser session can isolate a broken connection, but it is not a universal repair for an incompatible browser or Puppeteer bug. Do not fabricate stream IDs.

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