成功运行我的 stm 几次后，现在每次尝试运行它时都会收到此错误消息：
\nUNRELIABLE VALUE: Future (\xe2\x80\x98<none>\xe2\x80\x99) unexpectedly generated random numbers without specifying argument 'seed'. There is a risk that those random numbers are not statistically sound and the overall results might be invalid. To fix this, specify 'seed=TRUE'. This ensures that proper, parallel-safe random numbers are produced via the L'Ecuyer-CMRG method. To disable this check, use 'seed=NULL', or set option 'future.rng.onMisuse' to "ignore".\n这是我运行的代码：
\nmany_models <- data_frame(K = c(10, 20, 30, 40, 50, 60)) %>%\nmutate(topic_model = …