Qt and Python FAQ problem

Following the instructions in Build Your Own UI Using Qt for Python - Seeed Wiki step 2 does not work

sudo apt install qmake qt5-defaults
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package qmake
E: Unable to locate package qt5-defaults

Any hints?

Try to execute the following command and try again.
sudo apt update
sudo apt upgrade

I got result follow this.

sudo apt install qml-module-qtquick-shapes python3-pyside2.qtqml python3-pyside2.qtcore python3-pyside2.qtnetwork python3-pyside2.qtgui python3-pyside2.qtwidgets python3-pyside2.qtquick qtquickcontrols2-5-dev qml-module-qtcharts qml-module-qtquick-controls qml-module-qtquick-controls2 qtdeclarative5-dev qtdeclarative5-private-dev
sudo apt install qt5-qmake qt5-default
git clone https://github.com/Pillar1989/qtquickdesigner-components.git
cd qtquickdesigner-components
sudo make install