Running examples in ‘mlr3viz-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: autoplot.BenchmarkResult
> ### Title: Plots for Benchmark Results
> ### Aliases: autoplot.BenchmarkResult
> 
> ### ** Examples
> 
> if (requireNamespace("mlr3")) {
+   library(mlr3)
+   library(mlr3viz)
+ 
+   tasks = tsks(c("pima", "sonar"))
+   learner = lrns(c("classif.featureless", "classif.rpart"),
+     predict_type = "prob")
+   resampling = rsmps("cv")
+   object = benchmark(benchmark_grid(tasks, learner, resampling))
+ 
+   head(fortify(object))
+   autoplot(object)
+   autoplot(object$clone(deep = TRUE)$filter(task_ids = "pima"), type = "roc")
+ }
Loading required namespace: mlr3
INFO  [17:18:08.352] [mlr3] Running benchmark with 40 resampling iterations
INFO  [17:18:08.477] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 1/10)
INFO  [17:18:08.526] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 2/10)
INFO  [17:18:08.565] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 3/10)
INFO  [17:18:08.606] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 4/10)
INFO  [17:18:08.634] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 5/10)
INFO  [17:18:08.673] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 6/10)
INFO  [17:18:08.748] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 7/10)
INFO  [17:18:08.922] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 8/10)
INFO  [17:18:08.998] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 9/10)
INFO  [17:18:09.076] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 10/10)
INFO  [17:18:09.148] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 1/10)
INFO  [17:18:09.194] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 2/10)
INFO  [17:18:09.223] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 3/10)
INFO  [17:18:09.258] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 4/10)
INFO  [17:18:09.303] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 5/10)
INFO  [17:18:09.335] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 6/10)
INFO  [17:18:09.373] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 7/10)
INFO  [17:18:09.403] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 8/10)
INFO  [17:18:09.740] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 9/10)
INFO  [17:18:09.767] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 10/10)
INFO  [17:18:09.815] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 1/10)
INFO  [17:18:09.903] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 2/10)
INFO  [17:18:09.982] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 3/10)
INFO  [17:18:10.064] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 4/10)
INFO  [17:18:10.141] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 5/10)
INFO  [17:18:10.189] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 6/10)
INFO  [17:18:10.240] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 7/10)
INFO  [17:18:10.282] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 8/10)
INFO  [17:18:10.326] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 9/10)
INFO  [17:18:10.354] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 10/10)
INFO  [17:18:10.393] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 1/10)
INFO  [17:18:10.439] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 2/10)
INFO  [17:18:10.481] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 3/10)
INFO  [17:18:10.519] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 4/10)
INFO  [17:18:10.555] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 5/10)
INFO  [17:18:10.614] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 6/10)
INFO  [17:18:10.685] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 7/10)
INFO  [17:18:10.755] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 8/10)
INFO  [17:18:10.835] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 9/10)
INFO  [17:18:10.925] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 10/10)
INFO  [17:18:11.022] [mlr3] Finished benchmark
Error in `[.data.table`(data, , `:=`("task_hash", task[[1L]]$hash), by = "uhash") : 
  attempt access index 9/9 in VECTOR_ELT
Calls: benchmark ... initialize -> .__ResultData__initialize -> [ -> [.data.table
Execution halted