执行数据失败：class g5.meta.BCol cannot be cast to class g5.meta.UserC...

替换数据集 发现如下报错
执行数据失败：class g5.meta.BCol cannot be cast to class g5.meta.UserCol (g5.meta.BCol and g5.meta.UserCol are in unnamed module of loader 'app')

报错的意思是说：涉嫌非法的强制类型转换