sdm() error message: Error in if (wtest == "test.dep")

[ninzyfb]

Dear Babak, i keep getting this error when running my sdm function:

Error in if (wtest == "test.dep") cat("model performance (per species), using test dataset (generated using partitioning):\n") else if (wtest == :
missing value where TRUE/FALSE needed

I am not sure what this error means? Thank you for your help!