Error while generating report


We are unable to make reports working. Actually, we never used Enterprise plugin before, and enabled it after we updated our server from Graylog 2.3 to 3.0. Our data collection is below 3G daily so we dared to try Enterprise plug-in. We are currently at version 3.3.1-5.
The first error we got was:
{“type”:“ApiError”,“message”:“The driver executable does not exist: /bin/”}

Browsing this forum, we managed to move a bit forward by installing dependencies and fixing path issues. So now we got another error which looks like a dead end to us:
{“type”:“ApiError”,“message”:“unknown error: failed to write prefs file\n (Driver info: chromedriver=72.0.3583.1 (9ae827a6f6bbc9186d4e79681de885ce77d5bfe9),platform=Linux 3.10.0-1062.18.1.el7.x86_64 x86_64) (WARNING: The server did not provide any stacktrace information)\nCommand duration or timeout: 16 milliseconds\nBuild info: version: ‘unknown’, revision: ‘unknown’, time: ‘unknown’\nSystem info: host: ‘’, ip: ‘’, ‘Linux’, os.arch: ‘amd64’, os.version: ‘3.10.0-1062.18.1.el7.x86_64’, java.version: ‘1.8.0_161’\nDriver info: driver.version: RemoteWebDriver”}

We also tried setting report_disable_sandbox = true but there is no effect. There was suggestion to upgrade kernel to version 4.x. As per our supporting engineer, Centos host has kernel version 3.10.0-1062.18.1.el7.x86_64 and we could update it to 3.10.0-1127.10.1.el7 at most. I’m not sure if this would fix the issue.

I would appreciate any hint. Thanks.

just a guessing, when you update from 2.3 to 3.0 - did you include all the new configuration settings?

You might have a missing data dir in the configuration.

Thank you for the tip. It seems that it pointed us to the right direction. data_dir permissions were not set correctly. It is working now.

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