Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in D:\www_root\cainiao\web\zb_users\plugin\KandyApp\lib\phpmailer\get_oauth_token.php on line 18

Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='.;C:\php\pear') in D:\www_root\cainiao\web\zb_users\plugin\KandyApp\lib\phpmailer\get_oauth_token.php on line 18