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Unable to backup/restore a snapshot for Web Presence Builder in Plesk for Windows: Invalid Snapshot

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Yaroslav Tarasov
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Plesk for Windows kb: bug

Applicable to:

  • Plesk for Windows

Symptoms

  • Unable to backup/restore a snapshot for Web Presence Builder in Plesk for Windows due to one of the following errors:

    PLESK_ERROR: Invalid Snapshot

    PLESK_ERROR: Unable to restore website

  • One of the following errors appear in the %plesk_dir%admin\logs\plesklog_sitebuilder.log file:

    CONFIG_TEXT: [EMERG] /sitebuilder/JsonApi/ PleskUtilException: filemng failed:
    Unexpected error at execute "C:\Program Files (x86)\Parallels\Plesk\admin\bin\filemng.exe" u0088675 base64 C:\inetpub\vhosts\example.com\httpdocs\data/snapshots/6e6c622a415484ff7a23038329113589.php(RunTime::RunAsUser::run line 221)(Error code 1)file: C:\Program Files (x86)\Parallels\Plesk\admin\plib\Service\Agent.phpline: 243code: 0

    CONFIG_TEXT: ERR [1] Exception: PHP Warning: filesize(): stat failed for C:/Program Files (x86)/Parallels/Plesk/PrivateTemp/sb94E3.tmp.zip; File: C:\Program Files (x86)\Parallels\Plesk\admin\plib\Service\Driver\Filesystem\Plesk\Windows.php, Line: 271file: C:\Program Files (x86)\Parallels\Plesk\admin\plib\Smb\Exception\Syntax.phpline: 57code: 0

    CONFIG_TEXT: [EMERG] /sitebuilder/JsonApi/ SB_Site_Snapshot_Exception: invalidSnapshot
    file: C:\Program Files (x86)\Plesk\sb\include\SB\Site\Snapshot.php
    line: 258
    code: 0 91.204.25.4 https://example.com:8443/sitebuilder/Editor

Cause

The issue is caused by two product bugs #PPPM-3483 and #PPPM-4869 which will be fixed in future product updates.

Resolution

As a workaround connect to the server via RDP and perform the following actions (depending on Plesk version installed):

Warning: prior installing of patches below, make sure that the website on which snapshot is tried to be restored is available via HTTP.

For Plesk Obsidian

  1. Download and unpack the archive with the patched file Target.php.

  2. Create a backup of the original file Target.php located in %plesk_dir%sb\include\SB\Extension\PP.

  3. Copy the patched file Target.php into %plesk_dir%sb\include\SB\Extension\PP.

  4. Backup/restore a snapshot again.

For Plesk Onyx

  1. Download and unpack the archive with the patched file Target.php.

  2. Create a backup of the original file Target.php located in %plesk_dir%sb\include\SB\Extension\PP.

  3. Copy the patched file Target.php into %plesk_dir%sb\include\SB\Extension\PP.

  4. Backup/restore a snapshot again.

Comments

1 comment

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  • Avatar
    Andor Admiraal (Edited )

    I have tried to use the file for Plesk Onyx to solve this same issue on Plesk Obsidian - and it seems to work.

    I did needed to make some more changes though, but that might be particular to my installation. Changing to PHP 8.0 Fast CGI eventually solved the issue, I think WPB's failure to download or restore a snapshot was linked to a specific PHP configuration setting. But in any case, using the solution for Onyx does not seem to hurt Obsidian.

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