Hello, I migrated the whole web, mail, and database contents from a source server (running Ubuntu 16.04) to a target new server (running Ubuntu 18.04); and DNS records were change for a PLAYLISTS WEB APP to be redirected to the new server IP. I have verified by FTP connection that all folders and files of the app were migrated to the new server (and they were) ! But unlike a WEBSITE that was also migrated, when I call my PLAYLISTS WEB APP URL (hereunder) in browser, I am returned twice this ERROR MESSAGES. www.playlists.mydomain.net Whoops, looks like something went wrong. As the backup of the WEB APP was also migrated, I clicked on both buttons to restore the web and db of the app, but it has not changed (still the same error message). What would you advise me to do to recover connection to my playlists ?