The game says the default resource packs are incompatible, and that they are made for a newer version of Minecraft. But I'm on 1.16.1 and they work just fine when I go to use them.
I have been experimenting with other resource packs and older versions recently.
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However, we are already tracking this issue, and this report is a Duplicate of MC-197355, which is a report that has not been resolved yet.
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