Installer Error - Error during installation process (qt.qt.5120.gcc_64)

One customer just downloaded qt-enterprise-linux-x64-5.12.0.run and tried to install it on the Ubuntu 12.04 64 bit machine.
During the installation, they got the following error:
Error during installation process(qt.qt5.5120.gcc_64):
The output of /home/xluo/3rdparty/qt/qt-5.12.0/distribution/Qt5.12.0/5.12.0/gcc_64/bin/qmake -query
is not parseable. Please file a bugreport with this dialog https://
bugreports.qt-project.org.
output: ""

I also attached this error screenshot that they sent here and it is qt5.12.0-install-error.