I am reinstalling a Perfect Server (Debian 9.3). Everything went perfectly intill the ISPC3 install. Before it completed, I got called away, when I returned it seemed to have completed successfully but would not run. I tried to uninstall prior to reinstalling but got the following error: Directory /usr/local/ispconfig/ is empty If I run install.php I get a previous installation found message. When I run update,php I get the above error. Where do I go from here?