Why is my destructible mesh disappearing when I simulate?

For some reason, when I press simulate, the DM I made a while ago and haven’t edited since creating it (except from moving it from its original place on the map) the mesh disappears completely. I’ve tried recreating the mesh along with some other things and nothing seems to work. I really need this to work, as this accounts for part of my assignment due in three days.

Hello,

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Thanks

I need help with this also, my destructible mesh is disappearing instead of breaking apart