Upgrade or update of Plesk in Virtuozzo container fails with error

Symptoms

1. Plesk is running inside Virtuozzo container.

2. Plesk is inaccessible with 500 Internal Error

3. Plesk update/upgrade fails with following errors in /vae/log/plesk/panel.log:

   CONFIG_TEXT: error: unpacking of archive failed on file /var/lib/psa/dumps: cpio: mkdir failed - No such file or directory
   error: unpacking of archive failed on file /usr/local/psa/admin/htdocs/domains/databases/phpMyAdmin/libraries/phpseclib: cpio: mkdir failed - No such file or directory

   OR

   CONFIG_TEXT: sh: /usr/local/psa/bootstrapper/pp12.0.18-bootstrapper/bootstrapper.sh: No such file or directory

4. Mentioned in point 2 directory contains records like:
   

   # ll /usr/local/psa/admin/htdocs/domains/databases/phpMyAdmin/libraries/
   ...
   d????????? ? ? ? ? ? phpseclib
   ...

5. The following error is shown in upgrade log /var/log/plesk/install/autoinstaller3.log:

   CONFIG_TEXT: error: unpacking of archive failed on file /usr/local/psa/admin/plib/backup/Conflicts/Log: cpio: mkdir failed - No such file or directory

6. listing on directory /usr/local/psa/admin/plib/backup/Conflicts/ fails:

   # ls -la /usr/local/psa/admin/plib/backup/Conflicts/
   ls: cannot access /usr/local/psa/admin/plib/backup/Conflicts/Log: No such file or directory
   (...)
   d????????? ? ? ? ? ? Log

Cause

Broken links in Virtuozzo containers.

Resolution

Contact Virtuozzo Support Team  to fix the issue.