Spreadsheet issue (thinkphp framework)

Question

I used composer to download Spreadsheet, and then used Spreadsheet in the controller, but when I instantiated the Spreadsheet, I reported an error

Fatal error: Class 'PhpOffice\PhpSpreadsheet\Spreadsheet' not found

what is the reason? ?

Answer 1

The Spreadsheet was not found. Check to see if the imported path is wrong or it has not been downloaded.