I am getting "AAR:002 No JWT found" error while doing GET request in PHP

Question

I am trying to execute a PHP code base for GET API request, but I am getting

"AAR: 002" "No JWT Found"

error. below is the code

I am executing a GET request with cURL commands in PHP . The same code base and keys are working fine in Java and C# but when trying in PHP got this error.

When I try executing the below query

function getOpenSSLErrors()

{
    $messages = [];

    while ($msg = openssl_error_string()) { 
    $messages[] = $msg;
    }
    return $messages;
}

//function to generate JW token

function
generateJWT($algo,$header,$payload) {

    $headerEncoded = str_replace(['+','/','='], ['-','_',''], base64_encode(json_encode($header)));
    $payloadEncoded =str_replace(['+','/','='], ['-','_',''], base64_encode(json_encode($payload)));

    // Delimit with period (.)

    $dataEncoded ="$headerEncoded.$payloadEncoded";

 $filename = "C:\\Jeyanthi\\xampp\\htdocs\\Jeyanthi_keys\\scbapibankingprivatekey.pem";

 //$filename = "C:\\Ranjit\\xampp\\htdocs\\certs\\scb-api-banking-privatekey.pem";

 $file1 = fopen($filename,"r");
$privateKey = fread($file1,filesize($filename));
//This will be your private key.- scb-api-banking-privatekey.pem
 fclose($file1);
 //echo $privateKey;

  echo '************************************************************************************\n';

    $privateKeyResource = openssl_pkey_get_private($privateKey,'123456');//password to fetch private key
    $result = openssl_sign($dataEncoded,$signature,$privateKeyResource,$algo);
  if ($result ===false)
{
throw new RuntimeException("Failed to generate signature: ".implode("\n",getOpenSSLErrors()));

}
 $signatureEncoded =str_replace(['+','/','='], ['-','_',''],base64_encode($signature));
$jwt ="$dataEncoded.$signatureEncoded";
 return $jwt;
}
// JWT Header
$header = ["alg" => "RS256","typ" => "JWT" ];
$iat = time();

$exp=$iat+30;
// JWT Payload data

$payload =['jti'=>'CLIENT','exp'=>$exp, 'iss'=>"CLIENT",
                                'aud'=>"SCB-APIBanking",'iat'=>$iat 
                                ];
 

// Create the JWT

$jwt = generateJWT('sha256',$header,$payload);
$sslCertPass = '123456';                                        //This will be the passphrase for p12 certificate

//$sslCert='client.cer';

$filenameCert = "C:\\Jeyanthi\\xampp\\htdocs\\Jeyanthi_keys\\client.pem";

//$filenameCert = "C:\\Ranjit\\xampp\\htdocs\\certs\\client.pem";

    $sslCert = fread( fopen($filenameCert,"r"),filesize($filenameCert));

    //This will be your private key.- scb-api-banking-privatekey.pem

 //This will be the client.cer provided as part of activation - CURLOPT_SSLCERT

 

 //echo $sslCert;


//$sslKey = 'scb-apibanking-client-cert-private-key.pem';           //This will be your private key.pem


$privatekey_sslkey=realpath("C:\\Jeyanthi\\xampp\\htdocs\\Jeyanthi_keys\\clientcertsslprivatekey.pem");

//$privatekey_sslkey=realpath("C:\\Ranjit\\xampp\\htdocs\\certs\\scb-apibanking-client-cert-key.pem");

if(!$privatekey_sslkey || !is_readable($privatekey_sslkey)){

    die("error: client.pem is not readable! realpath:\"{$privatekey_sslkey}\"- working dir: \"".getcwd()."\"effective user: ".print_r(posix_getpwuid(posix_geteuid()),true));

}


// $url = "https://apitest.standardchartered.com/activate";

//$url = "https://apitest.standardchartered.com/uat2/openapi/subscriptions/v2/credit-debit-advice";

$url = "https://apitest.standardchartered.com/uat2/openapi/subscriptions/v2";

//Post the activation token

$ch = curl_init($url );
$variable = "sample";

$pem=realpath("C:\\Jeyanthi\\xampp\\htdocs\\Jeyanthi_keys\\client.pem");

if(!$pem || !is_readable($pem)){

    die("error: client.pem is not readable! realpath:\"{$pem}\" - working dir: \"".getcwd()."\"effective user: ".print_r(posix_getpwuid(posix_geteuid()),true));

}//echo $jwt ;
        
    $options = array(
        //CURLOPT_FAILONERROR => false,
        CURLOPT_RETURNTRANSFER => true,
        // CURLOPT_AUTOREFERER => true,
        //  CURLOPT_HEADER => true,
        //  CURLOPT_NOBODY =>true,
        CURLOPT_CUSTOMREQUEST => "GET",
        CURLOPT_SSLKEY =>$privatekey_sslkey,
        CURLOPT_SSLCERT => $pem,
        CURLOPT_KEYPASSWD => $sslCertPass,
        CURLOPT_SSLCERTPASSWD =>$sslCertPass,
        CURLOPT_SSL_VERIFYHOST => 2,
        CURLOPT_SSL_VERIFYPEER => true,
        // CURLOPT_POST => false,
        // CURLOPT_POSTFIELDS => $jwt,
        CURLOPT_HTTPHEADER => array(
            "Content-Type => application/json",
            "JWTToken => $jwt",
            "Pragma => akamai-x-get-extracted-values"
        ),
    );
    
    //print_r( $options);
    curl_setopt_array($ch,$options );
    $resp = curl_exec($ch);
    echo $resp;
    $ch_errno = curl_errno($ch);
    $ch_erro = curl_error($ch);
    curl_close($ch);
        
    if ($ch_errno)
    {
        echo "cURL Error #:". $ch_erro;
    } 
    else
    {
        echo "Response:".$resp;
    }
    ?>