require(vendor/autoload.php): failed to open stream
require(vendor/autoload.php): failed to open stream I know that this issue has been posted many times, but for me it seems to be a different problem. Indeed, this error Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in C:xampphtdocssite_websend_mail.php on line 3 Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='C:xamppphpPEAR') in C:xampphtdocssite_websend_mail.php on line 3 appears at the begining of my code from this line: require 'vendor/autoload.php'; So, I guess there must be a /vendor/autoload.php file somewhere in my computer (I have installed composer and ran composer require phpmailer/phpmailer composer require phpmailer/phpmailer ). So, I looked for this file using: dir /s autoload.php in the Windows command line, and found one here: C:WindowsSysWOW64vendorautoload.php , dir /s autoload.php C:WindowsSysWOW64vendorautoload.php but for me, syswow64 folder has nothing to see wi...