Help with Error: object 'rctdSim' not found

[Chrisdoan9]

Hi all,

I try to follow the tutorial: https://bioconductor.org/packages//release/bioc/vignettes/spacexr/inst/doc/rctd-tutorial.html
but got this error:

# Load simulated data.
data("rctdSim")
Warning message:
In data("rctdSim") : data set ‘rctdSim’ not found

reference_se <- SummarizedExperiment(
   assays = list(counts = rctdSim$reference_counts),
   colData = rctdSim$reference_cell_types
 )
Error: object 'rctdSim' not found

Would you please have a suggestion? Thank you so much!