This topic started at https://www.howtoforge.com/tutorial...m-debian-packages-on-debian-8-and-9/#comments on 1 November 2018. Please would you kindly read Till's and my comments there first. Thank you. 1. I installed the additional PHP versions above (as per the tutorial at the link above (above the comments)); 2. I followed the instructions to the letter (I did not understand how to edit the cronjob though). 3. Joomla continues to work on PHP 7.0 but not on any of the more modern PHP Versions (7.1, 7.2, 7.3). 4. I did install memcache as an optional extra in the tutorial but, after testing, this has no bearing (I changed the PHP settings within the config file to reflect the installation). 5. The Joomla website simply reports "error" in the browser without further information. 6. As recommended by Till, I have run off a PHP info report for all of the versions and saved these at the following links: 6A) 7.0 - https://www.gbglaw.org.uk/phpissue/phpinfo70.pdf 6B) 7.1 - https://www.gbglaw.org.uk/phpissue/phpinfo71.pdf 6C) 7.2 - https://www.gbglaw.org.uk/phpissue/phpinfo72.pdf 6D) 7.3 - https://www.gbglaw.org.uk/phpissue/phpinfo73.pdf 7) Website Settings (ISPConfig Website Settings Panel) - https://www.gbglaw.org.uk/phpissue/websitesettings.pdf 8) I have also enabled debug - this has produced the following error at https://www.gbglaw.org.uk : "Warning: session_start(): Failed to read session data: user (path: /var/www/clients/client2/web9/tmp) in /var/www/clients/client2/web9/web/libraries/joomla/session/handler/native.php on line 260 Error: Failed to start application: Failed to start the session Thanks and Kind Regards, indieben.