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qt. qpa. plugin: Could not find the Qt platform plugin “xcb“ in ““

2022-04-23 05:28:00 【Oriental forgetfulness】

This is a qt Environment problems of plug-ins .
resolvent 1：
export QT_QPA_PLATFORM_PLUGIN_PATH=/opt/qtlib/plugins

resolvent 2：
QCoreApplication::addLibraryPath("/opt/qtlib/plugins");

Of course, there are other ways , Please comment .

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