When an unknown error occurred, I got a stack overflow in QtCore:

{{ Qt5Network.dll!QSslSocketBackendPrivate::transmit() Line 615 C++}}
{{ Qt5Network.dll!QSslSocketPrivate::flush() Line 2672 C++}}
{{ [Inline Frame] Qt5Network.dll!QSslSocket::flush() Line 840 C++}}
{{ Qt5Network.dll!QSslSocket::close() Line 804 C++}}
{{ Qt5Network.dll!QHttpNetworkConnectionPrivate::shouldEmitChannelError(QAbstractSocket * socket) Line 247 C++}}
{{ Qt5Network.dll!QHttpNetworkConnectionChannel::_q_error(QAbstractSocket::SocketError socketError) Line 1031 C++}}
{{ Qt5Core.dll!QMetaObject::activate(QObject * sender, int signalOffset, int local_signal_index, void * * argv) Line 3769 C++}}
{{ [Inline Frame] Qt5Network.dll!QAbstractSocket::error(QAbstractSocket::SocketError _t1) Line 392 C++}}
{{ Qt5Network.dll!QAbstractSocketPrivate::setErrorAndEmit(QAbstractSocket::SocketError errorCode, const QString & errorString) Line 1419 C++}}
{{ Qt5Network.dll!QSslSocketBackendPrivate::transmit() Line 792 C++}}
{{ Qt5Network.dll!QSslSocketPrivate::flush() Line 2672 C++}}
{{ [Inline Frame] Qt5Network.dll!QSslSocket::flush() Line 840 C++}}
{{ Qt5Network.dll!QSslSocket::close() Line 804 C++}}
{{ Qt5Network.dll!QHttpNetworkConnectionPrivate::shouldEmitChannelError(QAbstractSocket * socket) Line 247 C++}}
{{ Qt5Network.dll!QHttpNetworkConnectionChannel::_q_error(QAbstractSocket::SocketError socketError) Line 1031 C++}}
{{ Qt5Core.dll!QMetaObject::activate(QObject * sender, int signalOffset, int local_signal_index, void * * argv) Line 3769 C++}}
{{ [Inline Frame] Qt5Network.dll!QAbstractSocket::error(QAbstractSocket::SocketError _t1) Line 392 C++}}
{{ Qt5Network.dll!QAbstractSocketPrivate::setErrorAndEmit(QAbstractSocket::SocketError errorCode, const QString & errorString) Line 1419 C++}}
{{ Qt5Network.dll!QSslSocketBackendPrivate::transmit() Line 792 C++}}
{{ Qt5Network.dll!QSslSocketPrivate::flush() Line 2672 C++}}
{{ [Inline Frame] Qt5Network.dll!QSslSocket::flush() Line 840 C++}}
{{ Qt5Network.dll!QSslSocket::close() Line 804 C++}}
{{ Qt5Network.dll!QHttpNetworkConnectionPrivate::shouldEmitChannelError(QAbstractSocket * socket) Line 247 C++}}
{{ Qt5Network.dll!QHttpNetworkConnectionChannel::_q_error(QAbstractSocket::SocketError socketError) Line 1031 C++}}
{{ Qt5Core.dll!QMetaObject::activate(QObject * sender, int signalOffset, int local_signal_index, void * * argv) Line 3769 C++}}
{{ [Inline Frame] Qt5Network.dll!QAbstractSocket::error(QAbstractSocket::SocketError _t1) Line 392 C++}}
{{ Qt5Network.dll!QAbstractSocketPrivate::setErrorAndEmit(QAbstractSocket::SocketError errorCode, const QString & errorString) Line 1419 C++}}
{{ Qt5Network.dll!QSslSocketBackendPrivate::transmit() Line 792 C++}}