In my app I have a code like this:

QNetworkAccessManager m_nm; 
void func()
{
    QNetworkRequest request; 
    request.setUrl("https://api.binance.com/api/v3/exchangeInfo"); 
    QNetworkReply* reply = m_nm.get(request); 
    // ...
}

// in the signal handler:
const QString answer = reply->readAll();
// parse the answer  

Today it stopped working and I got the corrupted response and the following logs in my app:
 

As you can see, the response contains `content-encoding=gzip` header. 

the workaround was to add the following line of code:
 

request.setRawHeader(QByteArray("Accept-Encoding"), QByteArray("deflate, br"));

that prevents the response from being compressed with gzip.

After that my app started to work and I did not investigate this anymore and the only thing I can suggest is that Binance changed something on its servers and QT stopped understanding its responses.

For example, Postman handles the response compressed with gzip: