Hi, please follow this tutorial to get the latest runtime updates. If you continue to receive this error, please provide the Runtime version of your QnA Maker Resource under profile > Service Settings so we can investigate further. We will be fixing the unreachable 'here' link in the portal soon. Hope this helps.
QnA Maker Warning Message - KB is on an older version
HP
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When publish the KB, it will show a warning message of "This KB is on an older version of QnA Maker.", wondering how to upgrade the KB to new version?