Call to undefined method Joomla\CMS\Document\JsonDocument::getHeadData()
Call to undefined method Joomla\CMS\Document\JsonDocument::getHeadData()
For audio in questions, I use jwplayer plugin. When I click Start Quiz, the quiz doesn't start and I get this error:
Call to undefined method Joomla\CMS\Document\JsonDocument::getHeadData()
Can this be fixed?
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