fail to use the function of fit.lightgbm()

[songxuechao]

when I train the model use the function of fit.lightgbm(), is always shows a failure. does anyone meet this problem?

[tobigithub]

One thing to check if the native R lightgbm() function is working, is to run a small example without retip, just purely lightgbm. If that is working its an internal retip issue.