lb build error

lb chroot
P: Setting up cleanup function
P: Begin caching chroot stage...
P: Begin mounting /dev/pts...
W: skipping chroot_devpts
P: Begin mounting /proc...
W: skipping chroot_proc
P: Begin mounting /sys...
W: skipping chroot_sysfs
P: Configuring file /etc/debian_chroot
/usr/share/live/build/scripts/build/lb_chroot_debianchroot: 81: cannot create chroot/etc/debian_chroot: Directory nonexistent
P: Begin unmounting filesystems...