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  [17:16:16.851] [mlr3] Running benchmark with 40 resampling iterations
INFO  [17:16:17.152] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 1/10)
INFO  [17:16:17.302] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 2/10)
INFO  [17:16:17.435] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 3/10)
INFO  [17:16:17.499] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 4/10)
INFO  [17:16:17.569] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 5/10)
INFO  [17:16:17.625] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 6/10)
INFO  [17:16:17.678] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 7/10)
INFO  [17:16:17.884] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 8/10)
INFO  [17:16:17.941] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 9/10)
INFO  [17:16:18.007] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 10/10)
INFO  [17:16:18.091] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 1/10)
INFO  [17:16:18.196] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 2/10)
INFO  [17:16:18.278] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 3/10)
INFO  [17:16:18.379] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 4/10)
INFO  [17:16:18.447] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 5/10)
INFO  [17:16:18.519] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 6/10)
INFO  [17:16:18.605] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 7/10)
INFO  [17:16:18.670] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 8/10)
INFO  [17:16:19.077] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 9/10)
INFO  [17:16:19.163] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 10/10)
INFO  [17:16:19.241] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 1/10)
INFO  [17:16:19.298] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 2/10)
INFO  [17:16:19.408] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 3/10)
INFO  [17:16:19.476] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 4/10)
INFO  [17:16:19.526] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 5/10)
INFO  [17:16:19.620] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 6/10)
INFO  [17:16:19.693] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 7/10)
INFO  [17:16:19.826] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 8/10)
INFO  [17:16:19.908] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 9/10)
INFO  [17:16:19.996] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 10/10)
INFO  [17:16:20.044] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 1/10)
INFO  [17:16:20.098] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 2/10)
INFO  [17:16:20.182] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 3/10)
INFO  [17:16:20.272] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 4/10)
INFO  [17:16:20.380] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 5/10)
INFO  [17:16:20.490] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 6/10)
INFO  [17:16:20.587] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 7/10)
INFO  [17:16:20.654] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 8/10)
INFO  [17:16:20.695] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 9/10)
INFO  [17:16:20.744] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 10/10)
INFO  [17:16:20.796] [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