Error when using lmomco and MASS packages to develop a new package

Question

I am trying to check a package I have created in R that uses functions from the lmomco package. When I use the "check" option in Rstudio I get the following error:

byte-compile and prepare package for lazy loading
Error : package or namespace load failed for 'lmomco' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
there is no package called 'MASS'

I already tried reinstalling lmomco and MASS, even using things like this:

install.packages("MASS", type="binary")
install.packages("MASS", repos="http://cran.rstudio.com/", dependencies=TRUE)

I need help in order to check the package I am developing.