为什么excel表格导入失败？

【新手必看】软件快速上手贴（持续更新）

Error in eval(family$initialize) : y值必需满足0 <= y <= 1

Error in gbm.unify(model, data):Models built on data with categorical features are not supported – please encode them before training.

Error in cut.default(x, c(bins[1] – delta, bins)) : ‘breaks’ 的值有重复

Input y contains infinity or a value too large for dtype(‘float64’)

Error in contrasts<-(*tmp*, value = contrasts.arg[[nn]]) :对比只适用于因子