Unable to load shared library 'MonoPosixHelper' or one of its dependencies

[Spocher]

Hello i try using puppeteer-sharp on linux server + asp .net core

And i have this exception:
Unable to load shared library 'MonoPosixHelper' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libMonoPosixHelper: cannot open shared object file: No such file or directory, ( at PuppeteerSharp.Helpers.Linux.LinuxSysCall.FromFilePermissions(FilePermissions value, UInt32& rval)

[kblok]

@Spocher did you install Mono?

[Spocher]

@Spocher did you install Mono?

No, I didn't know it was necessary

[kblok]

Could you try that? if it's that I'll add it to the readme

[Spocher]

Yes, now install

[Spocher]

Could you try that? if it's that I'll add it to the readme

Yeah, that solved the problem.
Install mono like https://www.mono-project.com/download/stable/#download-lin-debian

Install Dependencies like https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md:
apt-get install gconf-service libasound2 libatk1.0-0 libatk-bridge2.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget

And create options:
`var options = new LaunchOptions
{
Headless = true,
IgnoreHTTPSErrors = true,
DumpIO = true,
Args = new[]
{
"--no-sandbox",
"--disable-setuid-sandbox",
"--disable-web-security"
}

};`

And it worked. Debian 9 + Asp .Net Core. Cool!