R commands could not fine function "%>%"

[ccpage]

Hi, Thanks so much for putting out this cool pipline! I have gotten through the PF sorting but am stuck in step 9 on the R commands. At the point where we are Unifying 3D classes
Specifically in the bash terminal when I type
modeDataset <- x %>% group_by(GroupNumber, HelicalTubeID)%>% summarise(ClassNumber2=getmode(ClassNumber))

Error in x %>% group_by(GroupNumber, HelicalTubeID) %>% summarise(ClassNumber2 = getmode(ClassNumber)) :
could not find function "%>%"

Can you point out what I have done wrong?

Many Thanks!

[ccpage]

Not sure if this is really the place for these types of questions, sorry if it is not! I googled this error message I realize that this is likely an 'R' issue and not part of the pipeline. I see this error occurs if you don't have a library. While I did install the package dplyr, as instructed in the readme file, it is probably something else I did or didn't do! I will continue to research this error.