Problem with InlineKeyboardMarkup

[Quarx2k]

When i try send message with InlineKeyboardMarkup, this error throwed
org.telegram.telegrambots.exceptions.TelegramApiRequestException: Error sending message: [400] Bad Request: can't parse reply keyboard markup JSON object
It's a bug or i do something wrong?
Thanks.

[Maverick1983]

Change on Proxy.php this line (from line 43)

foreach ($this->REQUEST as $key => $val) {
$cmd .= '--form-string '.escapeshellarg($key.'='.$val).' ';
$request_headers[] = 'Content-Type: multipart/form-data';
}

with this

$cmd .= '-d '.escapeshellarg(json_encode($this->REQUEST)).' ';
$request_headers[] = 'Content-Type: application/json';

Add this after line 50
$request_headers[] = 'Content-Type: multipart/form-data';