Run example but get Error "cannot coerce type 'S4' to vector of type 'double'"

[yunbokai]

Dear Author:
I run the example

set.seed(125)
out = remap(demoC,title = "REmap",subtitle = "theme:Dark")
plot(out)

But I got something wrong:
Error in as.double(y) :
cannot coerce type 'S4' to vector of type 'double'
Can you help me?
Thanks for your attention!

[01miaom]

Use Remap function to get the plot output directly can avoid this error.
Using
remapC()
instead of using
out<-remapC()
plot(out)