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Troubleshooting.md

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Troubleshooting

Fixing "No usable sandbox"

So you want to run phantomas and get the following error:

Error: Failed to launch the browser process!
[0807/192619.437769:FATAL:zygote_host_impl_linux.cc(117)] No usable sandbox! Update your kernel or see https://chromium.googlesource.com/chromium/src/+/master/docs/linux/suid_sandbox_development.md for more information on developing with the SUID sandbox. If you want to live dangerously and need an immediate workaround, you can try using --no-sandbox.

Run the following as root:

echo kernel.unprivileged_userns_clone=1 > /etc/sysctl.d/00-local-userns.conf
service procps restart

See iridium-browser/tracker#208 (comment) for more details.

When running inside a Docker container

Please refer to https://github.com/Zenika/alpine-chrome#-the-best-with-seccomp.

Debugging

Before reporting an issue please run phantomas in verbose and debug mode:

DEBUG=* phantomas "http://example.com" --verbose

and provide the output via gist link.

phantomas fails to load HTTPS site

phantomas: (254) Page loading failed

Solution: Try providing --ssl-protocol=tlsv1 or --ssl-protocol=any option.