Cannot mix incompatible Qt library (version 0x50e01) with this library (version 0x50e02)

这个错误通常是由于使用了不兼容的 Qt 库版本导致的。你可以尝试以下步骤来解决这个问题：

1. 确认你的程序中使用的 Qt 版本与你编译程序时使用的 Qt 版本一致。

2. 如果你使用的是 Qt Creator，可以在项目文件中指定使用的 Qt 版本。在 .pro 文件中添加以下代码：

   QT += core gui
   
   greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
   
   CONFIG += c++11
   
   CONFIG -= app_bundle
   
   # The following define makes your compiler emit warnings if you use
   # any feature of Qt which as been marked deprecated (the exact warnings
   # depend on your compiler). Please consult the documentation of the
   # deprecated API in order to know how to port your code away from it.
   DEFINES += QT_DEPRECATED_WARNINGS
   
   # You can also make your code fail to compile if you use deprecated APIs.
   # In order to do so, uncomment the following line.
   # You can also select to disable deprecated APIs only up to a certain version of Qt.
   #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
   
   
   # This variable allows you to include your own .h files from the current directory.
   # These files are included after the standard Qt files.
   INCLUDEPATH += .
   
   # This variable allows you to add additional libraries to link against.
   # This comes in handy when using external libraries.
   #LIBS += -L$$PWD/../../../../../Qt/Qt5.9.5/5.9.5/clang_64/lib/ -lQt5Widgets
   QT += widgets
   
   SOURCES += \
           main.cpp \
           mainwindow.cpp \
           dialog.cpp \
           moc_dialog.cpp
   
   HEADERS += \
           mainwindow.h \
           dialog.h
   
   FORMS += \
           mainwindow.ui \
           dialog.ui
   

3. 如果你使用的是 Qt 库文件而不是 Qt Creator，可以尝试重新编译 Qt 库文件或者下载与你使用的 Qt 版本相符的库文件。

希望这些步骤可以帮助你解决问题。