Network status could not found after build

Hi, I am using QNetworkConfigurationManager::isOnline() API to find network status on my Linux desktop computer. It’s working fine when I work with QtCreator. But, It could not find the network status with build (Qt Installer). What is missing here with build? Are there specific libraries needs to include for network, already included libQt5Network.so. Qt version: 5.3.1 Thanks.