The Ambta MVCEngine is an engine that lets developers build Model, View, Control applications in PHP. The engine is compact and only provides the basic rendering. It is scalable, flexible and easy to use.
In the Response class the function send() dus not do anything with the header array set in the construct. So no headers are set by sending the response.
See Application/Responses/Response.php on line 55.
Add:
//Set all headers defined in headers array
if(!empty($this->headers) and is_array($this->headers)) {
foreach($this->headers as $header) {
header($header);
}
}