facing error

[ibrahimch]

When run script, I'm facing this issue
Fatal error: Uncaught exception 'RuntimeException' with message 'Access to Transmission requires authentication' in /opt/lampp/htdocs/vendor/kleiram/transmission-php/lib/Transmission/Client.php:131 Stack trace: #0 /opt/lampp/htdocs/vendor/kleiram/transmission-php/lib/Transmission/Transmission.php(131): Transmission\Client->call('torrent-add', Array) #1 /opt/lampp/htdocs/test.php(62): Transmission\Transmission->add('FC74568406F54AC...') #2 {main} thrown in /opt/lampp/htdocs/vendor/kleiram/transmission-php/lib/Transmission/Client.php on line 131