How to get a JWT Token via Oauth SSO

I get an access token and it is 4000 characters, and I need to get a jwt token, I do not know how

include 'app_credentials.php'; //load $secretKey, $clientID, and $base64 strings

$json = file_get_contents('access_token_refreshed.json');
$json_data = json_decode($json,true);
$refreshToken = $json_data['refresh_token'];
$accessToken = $json_data['access_token'];
$authURL = '';
$authPost = "grant_type=refresh_token&refresh_token=".$refreshToken;
$authHeader = array(
    "Accept: application/json",
    "Authorization: Basic $base64"
$ch = curl_init($authURL);
curl_setopt($ch, CURLOPT_HTTPHEADER, $authHeader);
curl_setopt($ch, CURLOPT_POSTFIELDS, $authPost);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
$authResponse = curl_exec($ch);
//echo $authResponse."\n\n";
if (file_exists('access_token_refreshed.json')) {
    unlink('access_token_refreshed.json'); //delete old file
$handle2 = fopen("access_token_refreshed.json","w");
fwrite ($handle2,$authResponse);

$rest = substr($authResponse, 17, strpos($authResponse, ',' ));
$rest1 = substr($rest, 0, -18);

$json_pilot = file_get_contents('info_pilot.json');
$json_data_pilot = json_decode($json_pilot,true);
$auURL = '';
$authHeader1 = array(
    "Authorization: Bearer $rest1");
$ch1 = curl_init($auURL);
curl_setopt($ch1, CURLOPT_HTTPHEADER, $authHeader1);
curl_setopt($ch1, CURLOPT_RETURNTRANSFER, true);  
$authResponse1 = curl_exec($ch1);

if (file_exists('info_pilot.json')) {
    unlink('info_pilot.json'); //delete old file
$handle_pilot = fopen("info_pilot.json","w");
fwrite ($handle_pilot,$authResponse1);

$id_pilot = $json_data_pilot['CharacterID'];

$url_wallet = '';
$authHeader_wallet = array(
    "accept: application/json",
    "authorization: Bearer $rest1",
    "Cache-Control: no-cache"
$ch_wallet = curl_init($url_wallet);
curl_setopt($ch_wallet, CURLOPT_HTTPHEADER, $authHeader_wallet);
curl_setopt($ch_wallet, CURLOPT_RETURNTRANSFER, true);  
$authResponse_wallet = curl_exec($ch_wallet);


And when I try to use the access token I have an error “{“error”:“authentication failure”}”

I have moved your Posting to the correct Forumscategory.

Sadly, the answer is you have to request less scopes.

Thank you, the problem has been solved!

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