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Knowledge Base

After updating to Plesk Obsidian 18.0.47 on Linux, blank page is shown instead of WP Toolkit menu

 
2022applications extensionsbackupinstall pleskinterface

Symptoms

  • After updating Plesk on Linux server to Obsidian 18.0.47, the menu WordPress shows blank page instead of the WP Toolkit interface.

  • One of the following non-English locales - Greek (el-GR), Hebrew (he-IL), Russian (ru-RU), Ukrainian (uk-UA), Thai (th-TH) (and possibly Arabic (ar)) - is set as the default locale in Tools & Settings > Languages.

Cause

Product issue:

  • #PPPM-13735 "WP Toolkit now works correctly with all locales."

    Fixed in:

    • Plesk Obsidian 29 September 2022

Resolution

Please consider updating your server:

  • How to install Plesk updates

Workaround

If update is not possible for some reason you may try the following

workaround

Until the bug is fixed, use the workaround:

  1. Connect to the server using SSH.

  2. Back up the file /usr/local/psa/admin/conf/php.ini:

    # cp -ap /usr/local/psa/admin/conf/php.ini{,.backup}

  3. Open the file /usr/local/psa/admin/conf/php.ini in the text editor and add the following line to it:

    pcre.backtrack_limit = 10000000

  4. Restart the service sw-engine:

    # service sw-engine restart

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