Error reading an XLSX file

You are using outdated syntax, see:

https://felipenoris.github.io/XLSX.jl/stable/migration/

or the docstring:

help?> XLSX.readtable()
  readtable(
      filepath,
      sheet,
      [columns];
      [first_row],
      [column_labels],
      [header],
      [infer_eltypes],
      [stop_in_empty_row],
      [stop_in_row_function]
  ) -> DataTable

  Returns tabular data from a spreadsheet as a struct XLSX.DataTable. Use this function to create a DataFrame from package DataFrames.jl.

(...)

Example
  ≡≡≡≡≡≡≡≡≡

  julia> using DataFrames, XLSX

  julia> df = DataFrame(XLSX.readtable("myfile.xlsx", "mysheet"))
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