how to recognize Julia about cmdstan executable?

[YutaroIshihama]

I am a windows 10 user and believe make and build of the cmdstan is successfully done, because so-called the Bernoulli checking is done well. I created the cmdstan directory under d:/cmdstan by git clone. Trial of binomial.jl located under d:/cmdstan directory after I set the variable ENV["CMDSTAN"] = "D:\\cmdstan" from the Julia 1.11 REPL complains the following message. Please advice how to work it around. Thanks in advance for your kind advice.

LoadError: IOError: cd(""): invalid argument (EINVAL)