我是spss的小白，想对意愿进行原因的分析，老师说用logistic   但是我在操作过程中出现了警告Estimation failed due to numerical problem. Possible reasons are: (1) at least one of the convergence criteria LCON, BCON is zero or too small, or (2) the value of EPS is too small (if not specified, the default value that is used may be too small for this data set).

实在不解，求帮助