It says At least one of your behavior or resource packs failed to load when you have no packs
MCPE-242545
Packs not loading when there’s none
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MCPE-242545
It says At least one of your behavior or resource packs failed to load when you have no packs
It also does this when there are packs, seemingly at random. For example, my current world only has one add-on, one I wrote myself that adds custom music. And it will “fail to load” some of the time and not others, without my having altered the add-on.