How to get error code from QWebEngineView?

Question

Qt

The application uses the QWebEngineView object to display web pages. To check if the page loaded successfully, I handle the loadFinished(bool) signal. If false is passed in the signal, you need to find out the reason for the failure. Is there a way to get some kind of error code? (for example, chromium DNS_PROBE_FINISHED_NXDOMAIN, ERR_INTERNET_DISCONNECTED, etc.)