Symptoms
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After updating Plesk on Linux server to Obsidian 18.0.47, the menu WordPress shows blank page instead of the WP Toolkit interface.
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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:
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#PPPM-13735 "WP Toolkit now works correctly with all locales."
Fixed in:- Plesk Obsidian 29 September 2022
Resolution
Workaround
If update is not possible for some reason you may try the following
workaround
Until the bug is fixed, use the workaround:
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Connect to the server using SSH.
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Back up the file
/usr/local/psa/admin/conf/php.ini:# cp -ap /usr/local/psa/admin/conf/php.ini{,.backup}
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Open the file
/usr/local/psa/admin/conf/php.iniin the text editor and add the following line to it:pcre.backtrack_limit = 10000000
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Restart the service
sw-engine:# service sw-engine restart