Error when converting the vs 2019 project to qt creator.

When I first installed it, the .pro file was created normally, but at some point there was a problem when I created the .pro file.

I was developing in vs2019, but I want to move it to qt creator because of various variables.

So, I tried to create a .pro file by clicking Create basic pro file of qtvstool.

Also, an error message pops up even when the .pro file is opened in vs2019.

I don't know why this problem occurs, and this problem gives me a lot of headaches.

I don't know what I should attach, but I don't know if it will be of great help to have the project configuration file attached.
Because the same problem is appearing even if I create a new project and do create basic pro file.

It doesn't seem to be a problem with the project, and it seems that various environmental problems acted in a complex way. It wasn't that it didn't work from the beginning, but I want to know that there was a problem that didn't work at some point.

============================== console output ==============================

— (Import): Generating new project of QTCPServer.pro file
— qmake(10856): started C:\QT\5.15.2\MSVC2019_64\bin\qmake.exe
— qmake: Working Directory: D:\Example_Source\QTcpSocket-master\QTcpSocket-master\QTCPServer
— qmake: Arguments: QMAKE_INCDIR_QT=$(QTDIR)\include QMAKE_LIBDIR=$(QTDIR)\lib QMAKE_MOC=$(QTDIR)\bin\moc.exe QMAKE_QMAKE=$(QTDIR)\bin\qmake.exe -o "QTCPServer.vcxproj" -tp vc "QTCPServer.pro"
— qmake(10856): exit code 0 (176.23 msecs)