Getting issue when running index.php

PHP Fatal error: Uncaught Hitrov\Exception\CurlException: curl error occurred: SSL certificate problem: unable to get local issuer certificate, response: in C:\Users\***\oci-arm-host-capacity\src\HttpClient.php:31 Stack trace: #0 C:\Users\***\oci-arm-host-capacity\src\OciApi.php(257): Hitrov\HttpClient::getResponse() #1 C:\Users\***\oci-arm-host-capacity\src\OciApi.php(132): Hitrov\OciApi->call() #2 C:\Users\***\oci-arm-host-capacity\index.php(74): Hitrov\OciApi->getInstances() #3 {main} thrown in C:\Users\***\oci-arm-host-capacity\src\HttpClient.php on line 31