I get this same error message every time I try to work with tidyverse, modelr and dplyr.
Error: package or namespace load failed for ‘tidyverse’ in namespaceExport(ns, exports):
undefined exports: contains, ends_with, everything, last_col, matches, num_range, one_of, peek_vars, poke_vars, scoped_vars, starts_with, vars_pull, vars_rename, vars_select, vars_select_helpers, with_vars.
This is the message I get when I select tidyverse, but this same message comes up when I try modelr or dplyr (of course tidyverse is replaced by one of these two).
I reinstalled R and R-studio 3 times, uninstalled and installed all these packages and I still get this error message.