等式后的语法问题

Question

如果有人可以帮助，将无法找出第5行的语法错误，将不胜感激。我已经获得了这些SQL，必须将它们放入Power Query中，但运气不佳

mtree <- rpart(Converted~., data = training, method="class",
               control = rpart.control(minsplit = 20, minbucket = 7, maxdepth = 5,
                                       usesurrogate = 2, xval =10 ))

rpart.plot(mtree, # middle graph
           type=4,
           extra=101, 
           box.palette="GnBu",
           branch.lty=3, 
           shadow.col="gray", 
           nn=TRUE,cex = 1
)