I'am using NetBeans IDE 8.2, I created a PHP application and using the composer within the IDE, I installed a package "phpspreadsheet" :
The package is then installed in the vendor folder and I even have the autocompletion when using the package's classes.
But when I run this project, it's throws me this error :
Fatal error: Class 'PhpOffice\PhpSpreadsheet\IOFactory' not found in C:\wamp64\www\NetBeansComposer\index.php on line 5
Is it beacause WAMP can't access the vendor folder? How can I fix this?