QT version unsuitable

I am installing avogadro in ubuntu 20.04. I followed the instructions in install file and got struck with an error.

– The build type is RelWithDebInfo
CMake Error at /usr/share/cmake-3.16/Modules/FindQt4.cmake:1314 (message):
Found unsuitable Qt version “5.12.8” from /usr/bin/qmake, this code
requires Qt 4.x
Call Stack (most recent call first):
CMakeLists.txt:226 (find_package)

– Configuring incomplete, errors occurred!

Although I am using an updated version of qt, I am getting this error.

Suggest what do I need to do next.

Thank you.