CSV.read provide a valid sink error

[jling]

first, have you tried doing what the error msg suggests?

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also please read the documentation:

CSV.File(path)

see also:

CSV.read Error - provide a valid sink argument

The DataFrame one should be DataFrame(CSV.File(data_file)) and still works. CSV.read used to work with a dataframe output as default, but was deprecated so CSV.jl doesn’t have to depend on DataFrames.jl It was then brought back as CSV.read(filepath, sink) as users were expecting a CSV.read function, and this structure means DataFrames only has to be loaded by the user if a DataFrame output is actually required.