Getting error in mesh and solver

I am trying to do a modal analysis on a honeycomb structure that i have generated using honeycomb creator and the whole geometry i have assemble in solidworks. Whole geometry consists of surfaces.

So when i am trying to generate mesh on body it shows an error:-

and while trying to solve by ignoring it, I am getting an error:-

Please help me how to resolve it and suggest me how to do it.

I am attaching archive file of project



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