I find that if I run in Terminal, it works well.
julia> cd("/Applications/julia/test/")
(test) pkg> activate .
Activating project at `/Applications/julia/test`
julia> using CSV
julia> using DataFrames
But when I run in Atom REPL, it gets an error.
julia> cd("/Applications/julia/test/")
(@v1.7) pkg> activate .
Activating project at `/Applications/julia/test`
julia> using CSV
[ Info: Precompiling CSV [336ed68f-0bac-5ca0-87d4-7b16caf5d00b]
ERROR: LoadError: UndefVarError: PosLen not defined
Stacktrace:
So maybe it is the problem of Atom.