arrange together with desc is producing an error

[GG-Delta]

Hey pwwang!

I am currently starting to work with your great package and I am still accommodating. Please allow me to share the following error with you (using one of your previous examples) that happens when trying to sort values in descending order (arrange and desc):

Example data frame:

df = tibble.tibble(A = ["apple","cherry","orange","banana"], B = [25,37,15,28])

This works well as expected:
Sorting the data frame based on values in column B using only arrange:

df >> dplyr.arrange(df.B)

This works produces an error (please see also the screenshot below):
Sorting the data frame based on values in column B (descending order) using arrange together with desc:

df >> dplyr.arrange(dplyr.desc(df.B))

May I ask whether I am missing here something? I made an effort to follow your very helpful documentation: https://pwwang.github.io/datar/notebooks/arrange/

Thank you,

Gernot