Looking for help with my toddler bed

I change the ea toddler bed a bit and it work in game BUT!!!

When I do the shadow map I get this error

Please help me. First time try

I read the (Create a new object,. package from existing mesh) but still get error

My package file

https://www.dropbox.com/s/kbfteqphk5nfzjr/Toddler%20bed%20with%20quilt.package?dl=0

Answer Here