Eu fui ao meu arquivo .pro e achei isso:
#specify where the qml/js files are installed to
qml_files.path = /Poker-Puzzle
qml_files.files += $${QML_FILES}
mudou para isto:
#specify where the qml/js files are installed to
qml_files.path = /Poker-Puzzle/QML/components
qml_files.files += $${QML_FILES}