Fatal error: Uncaught Hitrov\Exception\ApiCallException: { "code": "NotAuthenticated", "message": "Failed to verify the HTTP(S) Signature" } in /home/ubuntu/oci-arm-host-capacity/src/HttpClient.php:42

[desioxss]

PHP Fatal error: Uncaught Hitrov\Exception\ApiCallException: {
"code": "NotAuthenticated",
"message": "Failed to verify the HTTP(S) Signature"
} in /home/ubuntu/oci-arm-host-capacity/src/HttpClient.php:42
Stack trace:
#0 /home/ubuntu/oci-arm-host-capacity/src/OciApi.php(257): Hitrov\HttpClient::getResponse()
#1 /home/ubuntu/oci-arm-host-capacity/src/OciApi.php(132): Hitrov\OciApi->call()
#2 /home/ubuntu/oci-arm-host-capacity/index.php(74): Hitrov\OciApi->getInstances()
#3 {main}
thrown in /home/ubuntu/oci-arm-host-capacity/src/HttpClient.php on line 42

I get this when running "php index.php" on micro instance for flex instance, what should I do?

[HexHands]

I believe the issue is that the private key file that you gave was incorrect. You need to use the private key file obtained from creating the API key.