System information

• Win10/x64
• .Net 4.8

Issue

• It crashes in this line var model = pipeline.Fit(trainData);
• I get this error: System.InvalidOperationException: 'LightGBM Error, code is -1, error message is 'Unknown importance type: only support split=0 and gain=1'.'

With the previous version everything worked fine and nothing was modified in my source code since it worked.

This is my gbm setting
.Append(mlContext.Regression.Trainers.LightGbm("PercentPredict", "Features",null,null,null,null,200));