[InvalidArgumentException]
Could not find package phpspreadsheet.
Did you mean one of these?
portphp/spreadsheet
phpoffice/phpspreadsheet
ideea/excel
phpoffice/phpexcel
codeplex/phpexcel
I was follow the instruction, from :
https://phpspreadsheet.readthedocs.io/en/latest/
but this code show.
Do I forget something?