WP Toolkit cron task error in Plesk: VirtualPatchesLicensing::updateCpanelLicense was called on unsupported platform

Symptoms

• WordPress Toolkit maintenance crontask finishes with error:

  Cron psaadm@server (/usr/local/psa/admin/bin/php -dauto_prepend_file=sdk.php '/usr/local/psa/admin/plib/modules/wp-toolkit/scripts/maintenance.php') > /dev/null

• The following error in found in /var/log/plesk/panel.log:

  ERR [extension/wp-toolkit] Method PleskExtWpToolkitServiceVirtualPatchesVirtualPatchesLicensing::updateCpanelLicense was called on unsupported platform

Cause

WP Toolkit bug EXTWPTOOLK-11874 that was fixed in WP Toolkit 6.4.1.

Resolution

Update WP Toolkit to the latest version.