IOS 16.1.1 update and possible related Rivals issue-help tech dudes

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Installed latest iPhone update

Getting an error for video like YouTube on Aggie Yell

Template public:_media_site_embed_youtube not found. Try rebuilding or reinstalling the s9e/MediaSites add-on.

Is this error the result of the update?

Is this Rivals?

Solutions for an old ?

 

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