problems on application of Matrix Multiplication / Product sum functions

Dear all

I am having some problems with two tables, one is related to species (column) vs traits (row) and the other one is related to sites (column) vs species (row).
I would like to have a third matrix traits (column) vs sites (row) by matrix multiplication or or the sum of products functions. I have alraedy applied the matrix multiplication function but it results in value error. I send data as annex to get some help from you, if possible.

Thank you

Sincerely

Jose Macedo