library(hms)
Your opening quote looks slightly different from the closing quote. This probably explains why you received the error message regarding ?unexpected input?. I hope this helps.
On Mar 17, 2021, at 10:08 AM, Gregory Coats via R-help <r-help at r-project.org> wrote: ?On my MacBook, I do not have, and do not know how to install, library(hms). Greg Coats
library(hms)
Error in library(hms) : there is no package called ?hms?
Install.libraries(?hms?)
Error: unexpected input in "Install.libraries(?"
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