error when adding annotations

[camillaln]

Hi,

I am getting an error message when trying to add a gtf annotation file to my plot.
I got the same message when testing out the example: https://showteeth.github.io/ggcoverage/index.html#rna-seq-data

basic.coverage + geom_gene(gtf.gr=gtf.gr)
Error in geom_gene():
! Problem while computing layer data.
ℹ Error occurred in the 6th layer.
Caused by error in UseMethod():
! no applicable method for 'pull_genes' applied to an object of class "waiver"
Run rlang::last_trace() to see where the error occurred.
Warning message:
In geom_gene(gtf.gr = gtf.gr) :
Ignoring unknown parameters: gtf.gr

Could you please help me figure this out?
Thanks,

Camilla