在R中使用'mlogit'来估计离散选择数据时出错：无效的'times'参数

I am getting this error every time I try and run a mixed logit model using "mlogit" on this data, and I cannot figure out what I am missing. This is discrete choice data from a conjoint survey about vehicles. The data is coded using effects coding. Here is how I am preparing the data for mlogit:I am getting this error every time I try and ru