QNetworkAccessManager doesn't call finished signal

[Swiftie]

Thanks for reply,
Here the some changes i made

void AppApi::replyFinished(QNetworkReply* reply)
{
    qDebug() << "replyFinished" << reply;
    reply->deleteLater();
}

void AppApi::replyFinished(QNetworkReply* reply)
{
    qDebug() << "replyFinished" << reply;
    reply->deleteLater();
}

To copy to clipboard, switch view to plain text mode 

Here the UserApi class:

#include "../appapi.h"
 
class UserApi : public AppApi
{
public:
    UserApi();
    void sendMessage();
};

#include "../appapi.h"

class UserApi : public AppApi
{
public:
    UserApi();
    void sendMessage();
};

To copy to clipboard, switch view to plain text mode 

#include "userapi.h"
 
UserApi::UserApi()
{
}
 
QString UserApi::sendMessage()
{
    // Processing content, etc
    AppApi api;
    api.makeRequest();
}

#include "userapi.h"

UserApi::UserApi()
{
}

QString UserApi::sendMessage()
{
    // Processing content, etc
    AppApi api;
    api.makeRequest();
}

To copy to clipboard, switch view to plain text mode 

Somewhere in code

UserApi *c = new UserApi;
c->sendMessage();

UserApi *c = new UserApi;
c->sendMessage();

To copy to clipboard, switch view to plain text mode 

Raises Segmentation fault.
I know it's a lame code, but after 2 years of Python i forgot even a basics of C++ and it's my first project in Qt.

Can you explain how properly i make request from UserApi (for example) and return response.

Best regards