Installed clean system according to the instructions - www.howtoforge.com/tutorial/perfect-server-debian-9-stretch-apache-bind-dovecot-ispconfig-3-1/ Created a client. Created a website (PHP-FPM). Created a DNS zone. Created database and user. Created an FTP user. Downloaded archive with the latest version of ModX Revolution 2.6.3, unzipped and uploaded via ftp to the folder " web " on the server. When clicking on the link domain.com/setup/ writes: "FATAL ERROR: MODX Setup cannot continue. Make sure your PHP session configuration is valid and working." As far as it became clear, modx revo need a folder "mod-tmp" to store cookies, but I can not add it via ftp, ssh, too. Just uploaded wordpress instead of modx, everything works fine, no problems with PHP session configuration. 1. Question, how to solve this problem ? 2. Can I make changes to the ISPConfig 3 site creation wizard to create not only the tmp folder but also the mod-tmp folder ? Where can I make these changes ?