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Call to undefined method : Joomla\Plugin\System\Schemaorg\Extension\Schemaorg->onBeforeCompileHead
Check PHP version 8.3, 8.2, 8.1 the same issue.
Message focus Schemaorg plugin, search via internet not relate.
Try in luck: admin>configuration TURN OFF SEF url, then TURN ON again.
Not sure why, may be relate configuration file when upgrade j4 to j5.
