Random Forest and Multi-factor analysis issue

[idaajo]

Random Forest :
mbSet<-RF.Anal(mbSet, 500,7,1,"Class","OTU")
Error in RF.Anal(mbSet, 500, 7, 1, "Class", "OTU") :
object 'meta.vec.rf' not found

Multi-factor Analysis :
library(Maaslin2)

adj.vec <<- []
mbSet<-ProcessMaaslin(mbSet, "Class", "false", "CTRL", "UC", "NA", "OTU" , "covariate_plot_0.png" , 0.05)
PerformMaaslin(1);

Error in ProcessMaaslin(mbSet, "Class", "false", "CTRL", "UC", "NA", "OTU", :
could not find function "ProcessMaaslin"

Also, PerformMaaslin function is not found in the Package.
Need help in solving these issues.