Downloading packages
Failed to register the CT: PRL_ERR_VZCTL_OPERATION_FAILED (Details: Creating OS template cache for ubuntu-20.04-x86_64 template

tune2fs 1.42.9 (28-Dec-2013)
Setting maximal mount count to -1
Setting error behavior to 2
Setting interval between checks to 0 seconds
E: Unable to determine a suitable packaging system type
Error: /usr/bin/apt-get failed, exitcode=100
Error: Failed to umount ploop image /vz/tmp//vzpkg.2WxExF/cache-private/root.hdd: Error in ploop_umount_image (ploop.c:2804): Image /vz/tmp/vzpkg.2WxExF/cache-private/root.hdd/root.hds is not mounted 40
VE_PRIVATE is not set
Creation of Container private area failed

service vz restart