No, the project is designed for Qt5, even in the .pro file you can read "greaterThan(QT_MAJOR_VERSION, 4)" (Qt version > 4). Try to delete the .pro.user file and then run the .pro. The .pro.user shouldn't be in the repo.
Can you add me on Discord? Name is under my profile here on epvpQuote:
Ok, now i can open it with qt but i can't build
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