Symptoms
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Installing a WordPress instance on an existing or newly added domain fails with the following error:
WordPress installed with errors:
PleskExtWpToolkitDbRowVulnerability::getRiskRank(): Return value must be of type string, null returned -
WP Toolkit has been recently updated
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This error shows in /var/log/plesk/panel.log related to the recent WP Toolkit update:
[2024-06-12 10:24:00.385] 1146307:666976f2884a8 ERR [extension/wp-toolkit] The execution of post-install.php has failed with the following message:
PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 20480 bytes) in /opt/psa/admin/plib/modules/wp-toolkit/library/Helper/Util.php on line 174
Cause
WordPress Tookit bugs EXTWPTOOLK-11883 and EXTWPTOOLK-11884.
Resolution
Until the bug is fixed, apply the following workaround:
1. Increase the Plesk memory limit as per the following article: Operations in Plesk fail: Allowed memory size of X bytes exhausted (tried to allocate Y bytes)
2. Connect to the server via SSH and run the WP Toolkit maintenance script, which would update the vulnerabilities database as well, by executing the following command:
# plesk bin extension -e wp-toolkit maintenance.php