could not load the qt platform plugin windows

Qrc:/main.qml:2:1: module 'QtQuick.Layouts' is not installed Qrc:/main.qml:5:1: module '' is not installed Qrc:/main.qml:3:1: module 'QtQuick.Controls' is not installed Qrc:/main.qml:1:1: module 'QtQuick' is not installed One interesting thing I found though is that when I set Plugins = /home//qt/5.12.2/gcc_64/plugins, a little Qt window shows, but comes with a bunch of error messages: qrc:/main.qml:4:1: module 'QtQuick.Dialogs' is not installed I've also tried qt.conf and set the Prefix and Plugin path to. Reinstalling the application may fix this problem. This application failed to start because no Qt platform plugin could be initialized. And this is the error message when the executable run: qt.qpa.plugin: Could not load the Qt platform plugin 'xcb' in '' even though it was found. In order to test the standalone package, I change ~/Qt5.12.2 into ~/qt.

I've followed some answers and have copied platform/libqxcb.so and libQt5XcbQpa.so.5 into the install directory. And I assume that the install directory should become a standalone app that can be copied and run on other computers without Qt installed? I'm not sure about the role of CPack here. As far as I know, all the dependencies can be resolved at the install step with fixup_bundle macro. I'm trying to setting up a standalone binary archive (.tar.gz) that can run on most Linux distros (ex.

Could not load the qt platform plugin windows