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  [04:35:29.782] [mlr3] Running benchmark with 40 resampling iterations
INFO  [04:35:30.057] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 1/10)
INFO  [04:35:30.141] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 2/10)
INFO  [04:35:30.179] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 3/10)
INFO  [04:35:30.238] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 4/10)
INFO  [04:35:30.311] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 5/10)
INFO  [04:35:30.410] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 6/10)
INFO  [04:35:30.446] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 7/10)
INFO  [04:35:30.630] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 8/10)
INFO  [04:35:30.664] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 9/10)
INFO  [04:35:30.699] [mlr3] Applying learner 'classif.featureless' on task 'pima' (iter 10/10)
INFO  [04:35:30.850] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 1/10)
INFO  [04:35:30.918] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 2/10)
INFO  [04:35:30.962] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 3/10)
INFO  [04:35:31.178] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 4/10)
INFO  [04:35:31.243] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 5/10)
INFO  [04:35:31.350] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 6/10)
INFO  [04:35:31.465] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 7/10)
INFO  [04:35:31.564] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 8/10)
INFO  [04:35:31.962] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 9/10)
INFO  [04:35:32.017] [mlr3] Applying learner 'classif.rpart' on task 'pima' (iter 10/10)
INFO  [04:35:32.064] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 1/10)
INFO  [04:35:32.109] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 2/10)
INFO  [04:35:32.161] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 3/10)
INFO  [04:35:32.240] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 4/10)
INFO  [04:35:32.274] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 5/10)
INFO  [04:35:32.317] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 6/10)
INFO  [04:35:32.351] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 7/10)
INFO  [04:35:32.421] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 8/10)
INFO  [04:35:32.472] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 9/10)
INFO  [04:35:32.551] [mlr3] Applying learner 'classif.featureless' on task 'sonar' (iter 10/10)
INFO  [04:35:32.585] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 1/10)
INFO  [04:35:32.649] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 2/10)
INFO  [04:35:32.752] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 3/10)
INFO  [04:35:32.821] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 4/10)
INFO  [04:35:32.890] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 5/10)
INFO  [04:35:32.951] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 6/10)
INFO  [04:35:33.016] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 7/10)
INFO  [04:35:33.077] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 8/10)
INFO  [04:35:33.139] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 9/10)
INFO  [04:35:33.214] [mlr3] Applying learner 'classif.rpart' on task 'sonar' (iter 10/10)
INFO  [04:35:33.296] [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