I ran python Main.py, typed 7 and my csv filename. Then I get:

TypeError: can't multiply sequence by non-int of type 'numpy.float64'

It is an issue of pyDOE. pyDOE has not been updated since April 2018, and it has not solved this problem.

Then I found that using pyDOE2 can solve this problem from this issue.

pyDOE2 is a fork of the pyDOE package.

So maybe you can install pyDOE2, and change pyDOE to pyDOE2 in DOE_functions.py.