See the line
qt.qpa.screen: "Unable to open monitor interface to \\\\.\\DISPLAY1:" "The operation completed successfully."
This indicates Qt is unable to query the OS for your monitor. That is likely the cause. I'm not a windows user so I dont have any ideas for what might the underlying issue be, but in general, my suggestions are: update the drivers on your machine, try plugging the monitor into a different port in case it is an external monitor, run a registry cleaner, reboot in safe mode.
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