Fatal error: Uncaught Error: Class "Nexmo\Client\Credentials\AbstractCredentials" not found in /home/trombino/public_html/africa.trombino.org/vendor_/nexmo/client-core/src/Client/Credentials/OAuth.php:11
Stack trace:
#0 {main}
thrown in /home/trombino/public_html/africa.trombino.org/vendor_/nexmo/client-core/src/Client/Credentials/OAuth.php on line 11