Screenshot is not working in headless

[kamira]

I am try screenshot after page loaded, but after full loaded I can't screenshot.

OS: Windows 10 1809 IDE: PyCharm 2019.3 PyVersion: 3.8.2

code:

async def test():
    browser = await launch

    page = await browser.newPage()

    await page.setViewport(viewport={'width': 1280, 'height': 800})
    await page.setJavaScriptEnabled(enabled=True)
    await page.setUserAgent(
        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) '
        'AppleWebKit/537.36 (KHTML, like Gecko) '
        'Chrome/58.0.3029.110 '
        'Safari/537.36 '
        'Edge/16.16299')
    print('new page')
    await page.goto(full_url, {"waitUtil": 'networkidle0', "timeout": 0})
    await asyncio.sleep(5)
    print('await start')
    await Promise.race([
        asyncio.create_task(page.waitForNavigation({"waitUtil": 'networkidle0', "timeout": 0})),
        asyncio.create_task(asyncio.sleep(10))
    ])
    print('await done')
    print(f'screenshot start')
    buffer = await page.screenshot()
    print(f'screenshot end')
    await page.close()
    print(buffer)

output:

new page
await start
await done
screenshot start

[kamira]

I solve it by self. I upgrade the chrome version and then it solved.