"classif.svm" and "classif.regr" not in the key of as.data.table(mlr_learners)

[ligaojian96]

I am reading and learning the book Applied Machine Learning Using mlr3 in R, when I am following the examples provided by this book, I find the Algorithms like "classif.svm" and "classif.regr" are not in the learner, and I don’t know what happened.

Here is the screenshot.

[ligaojian96]

here is the version of my mlr3 package.

[be-marc]

You have to load mlr3verse or mlr3learners, not only mlr3.