Hey,
Yes, i use the last Version. 1.5.3 (2018120800)
Its a fresh install without backups, the System Debian 9 is fresh installed too.
I had the same error with Ubuntu 16.04 as System. Debian 8 is working perfectly.
QuoteDisplay More[ERROR] │
│ │
│ Error while performing step: │
│ │
│ Creating/Updating pbuilder environment │
│ │
│ Error was: │
│ │
│ autoinstaller::Adapter::DebianAdapter::__ANON__: Couldn't create/update pbuilder environment: mknod: │
│ /var/cache/pbuilder/build/16836/test-dev-null: Operation not permitted │
│ E: debootstrap failed │
│ W: Aborting with an error │
│ │
│ Please have a look at http://i-mscp.net/forum if you need help.