It would appear whoever manages your YouTube channel has forgotten how many links to videos on that channel are on the website. A lot of the videos have been made private.
Example: https://www.guildwars2.com/en/the-game/professions/necromancer/
Click a skill video.
Content Marketing Manager, French
Hi there,
This was due to a mistake after cleaning up the backend of our YouTube channel. Thanks for your report!
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