I tried : install.packages("devtools") devtools::install_github("JGCRI/rfasst")
to install the rfasst package but it didn't work and I received these errors: Error in dplyr::mutate(., subRegionAlt = as.character(subRegionAlt)) : trying to get slot "data" from an object (class "sf") that is not an S4 object Error: unable to load R code in package 'rfasst'

:
I tried :
install.packages("devtools") devtools::install_github("JGCRI/rfasst")to install the rfasst package but it didn't work and I received these errors:
Error in dplyr::mutate(., subRegionAlt = as.character(subRegionAlt)) : trying to get slot "data" from an object (class "sf") that is not an S4 object Error: unable to load R code in package 'rfasst':