I have the same problem like this, I am using VTK 9.2 and Qt 5.13, I built BarChartQt example with cmake, and the configuration and generating were ok with no errors, but when I open the .sln project and set up as a startup project (the BarChartQt) in release mode, I have this error: (also I checked the lib and dll files and this GUISupportQt file, was existed)
