I am encountering this:
ERROR: LoadError: ArgumentError: Module Dates not found in current path.
Run `Pkg.add("Dates")` to install the Dates package.
while working on some local packages and scripts, but not others. (Dates is in stdlib, so this is just wrong.) I vaguely recall mention of peculiar problems with Dates, but have been unable to find it again with handy search facilities. Can anyone point to an official issue and/or workaround?