I'm getting this error on the Drupal install: Drupal is unable to generate highly randomized numbers, which means certain security features like password reset URLs are not as secure as they should be. Instead, only a slow, less-secure fallback generator is available. The most likely cause is that open_basedir restrictions are in effect and /dev/urandom is not on the whitelist. See the system requirements page for more information. There is no suitable CSPRNG installed on your system I haven't found any instantiation of open_basedir in the config or ini files on the server, and there are 3 other sites running for the same client that never threw this error, so we figured it must be from ISPConfig itself. The site is on v. 220.127.116.11p5. Adding /dev/urandom to the list in ISPConfig > Server config has not resolved it. Any suggestions? Am I missing another place?