【Qt 报错This application failed to start because it could not find or load the Qt platform plugin】

Question 1:

And found that under the release in the x64 directory, only one .exe file was generated

Solution 1:

In cmd, go to the Qt installation directory and execute windeployqt.exe --release "Directory: directory under release"

Reference: https://blog.csdn.net/qq_27278957/article/details/117076651