Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Screenshot in Windows Service

See original GitHub issue

Description

Taking a screenshot of a page only works while debugging inside Visual Studio, if I build my windows service I get stuck on this method.

Complete minimal example reproducing the issue

public async System.Threading.Tasks.Task Async(string url, string outPath)
{
    await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
    var browser = await Puppeteer.LaunchAsync(new LaunchOptions
    {
        Headless = true
    });
    var page = await browser.NewPageAsync();
    await page.GoToAsync(url);
    await page.SetViewportAsync(new ViewPortOptions
    {
        Width = 1366,
        Height = 768
    });
    await page.ScreenshotAsync(outPath);//The process hangs here
    await page.CloseAsync();
    await browser.CloseAsync();
}

Expected behavior:

I can take the screenshot

Actual behavior:

The process hangs in the ScreenshotAsync method

Versions

Puppeteer-Sharp v 1.13.0, I know 1.14.0 is out but I can’t update because I get this when trying to update: “Severity Code Description Project File Line Suppression State Error Failed to add reference. The package ‘Mono.Posix.NETStandard’ tried to add a framework reference to ‘Mono.Posix’ which was not found in the GAC. This is possibly a bug in the package. Please contact the package owners for assistance. Error HRESULT E_FAIL has been returned from a call to a COM component.”
Targeting .NET Framework 4.7.2