Fatal error: Uncaught Error: Class "League\OAuth2\Client\Provider\AbstractProvider" not found in /home/telefonai/public_html/test.telefonai.eu/templates/__MACOSX/vendor/verbb/auth/src/clients/gumroad/provider/Gumroad.php:26 Stack trace: #0 {main} thrown in /home/telefonai/public_html/test.telefonai.eu/templates/__MACOSX/vendor/verbb/auth/src/clients/gumroad/provider/Gumroad.php on line 26