Your world's "level.dat" file is broken, restore it from a backup.
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Say something silly, Laugh 'til it hurts, Take a risk, Sing out loud, Rock the boat, Shake things up, Flirt with disaster, Buy something frivolous, Color outside the lines, Cause a scene, Order dessert, Make waves, Get carried away, Have a great day!
so I quit mc when I got back my world wasnt there when I chek in files it is there but it doesn't show in the game
Your world's "level.dat" file is broken, restore it from a backup.