Plesk Backup finishes with a warning: Removing leading `/’ from member names

Symptoms

• Backup finishes with the following warning:

  Warning: Subscription "example.com"
  Not all the data from /var/www/vhosts/example.com was backed up successfully:
  /usr/lib64/plesk-9.0/sw-tar: Removing leading `/' from member names

• The following can be found in /var/log/plesk/PMM/backup-<date>-<time>/backup.log:

  INFO: Skip warning: /usr/lib64/plesk-9.0/sw-tar: example.com/wp-content/== Changelog ==: Warning: Cannot stat: No such file or directory
  INFO: Skip warning: /usr/lib64/plesk-9.0/sw-tar: = 7.0 =: Warning: Cannot stat: No such file or directory
  INFO: /usr/lib64/plesk-9.0/sw-tar: Removing leading `/' from member names

• There are files with invalid file names in the domain webspace directory, for example:

  # ls -lha /var/www/vhosts/example.com/httpdocs/wp-content/
  ...
  rwxr-xr-x 2 user psacln 4,0K mar 4 2019 ? 1. Fullscreen styles?
  rwxr-xr-x 3 user psacln 4,0K mar 4 2019 == Changelog ==??**This is a list detailing changes for all the past Jetpack releases. For more information about the current release, see [the readme](https:
  rwxr-xr-x 2 user psacln 4,0K mar 4 2019 * Do not modify this file directly. It is compiled SASS code. *

Cause

Plesk backup utility fails to parse invalid file names.

Resolution

This warning can be safely ignored. It means that backup was successfully created, but the affected files were skipped. In case, it's desired to remove the warning:

1. Connect to the server via SSH.
2. Find the files named incorrectly in the backup log file: /var/log/plesk/PMM/backup-<date>-<time>/backup.log
3. Rename files with invalid file names, for example:

# mv /var/www/vhosts/example.com/httpdocs/wp-content/? 1. Fullscreen styles? /var/www/vhosts/example.com/httpdocs/wp-content/fullscreen