glm multinomial fails with nfold or fold column cross validation
Happens with Tibshirani 8 and latest nightly (18.104.22.16800)
I manually generated a fold column, 'x'. I tried nfolds=10 also and same results (I wanted to do both lambda search and nfold cross validation, so I'm managing both myself). There are 7381 observations/rows in the data.
I have the same error, with and without a custom fold column, but with cross-validation in general.