При попытке отменить платеж - 415 Unsupported Media Type

[glowfisch8lan]

При вызове метода cancelBill() получаю
'{ "servlet":"dispatcherServlet", "message":"Unsupported Media Type", "url":"/v1/bills/fe155d50-d30e-4c85-bf96-6c9fa2ad990a-68/reject", "status":"415" }'

Если отправить Postman запрос - то все окей

[shipulina]

В requestBuilder в $headers добавить Content-Type

$headers = [
    'Accept: application/json',
    'Authorization: Bearer '.$this->secretKey,
    'Content-Type: application/json;charset=UTF-8', // <---  
];
if (true !== empty($body) && self::GET !== $method) {
    $body    = json_encode($body, JSON_UNESCAPED_UNICODE);
    $headers = array_merge(
        $headers,
        [
            // 'Content-Type: application/json;charset=UTF-8',
            'Content-Length: '.strlen($body),
        ]
    );
}