Exception occured: ISPConfigOSException -> Command mount -o remount / 2>&1 && quotaoff -avug 2>&1 && quotacheck -avugm 2>&1 && quotaon -avug 2>&1 failed. (/ispconfig.ai.php:15)
You seem to use a vm that does not support Linux quota. Run the installer again but happen the option: --no-quota to the command.
Okay after do that I have this error. [ERROR] Exception occured: ISPConfigOSException -> Installing packages failed. (/ispconfig.ai.php:15)
Run the installer with --debug option, this will create a log file so we can see which exact command fails on your system.