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  4. Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.

Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.

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  • F Offline
    F Offline
    FCTravassos
    wrote on last edited by
    #1

    I’m trying to use the Design tab in Qt Creator, but I’m getting this error message. How can I fix this problem?

    Captura de tela 2025-08-12 091447.png

    Pl45m4P 1 Reply Last reply
    0
    • F FCTravassos

      I’m trying to use the Design tab in Qt Creator, but I’m getting this error message. How can I fix this problem?

      Captura de tela 2025-08-12 091447.png

      Pl45m4P Offline
      Pl45m4P Offline
      Pl45m4
      wrote on last edited by Pl45m4
      #2

      @FCTravassos said in Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.:

      How can I fix this problem?

      What do you think how it's fixed?
      The answer is in the error message: You need to install/set a Qt Kit (Compiler + Qt Installation + other required tools)
      Configure your kit, then you can use the editor


      If debugging is the process of removing software bugs, then programming must be the process of putting them in.

      ~E. W. Dijkstra

      1 Reply Last reply
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      • F Offline
        F Offline
        FCTravassos
        wrote on last edited by
        #3

        But apparently I already have a valid version of Qt, as can be seen in the image.

        img.png

        cristian-adamC Pl45m4P 2 Replies Last reply
        0
        • F FCTravassos

          But apparently I already have a valid version of Qt, as can be seen in the image.

          img.png

          cristian-adamC Offline
          cristian-adamC Offline
          cristian-adam
          wrote on last edited by
          #4

          @FCTravassos That's the Qt version. You should make a screenshot of the Kits page, with the details of the active kit.

          F 1 Reply Last reply
          1
          • F FCTravassos

            But apparently I already have a valid version of Qt, as can be seen in the image.

            img.png

            Pl45m4P Offline
            Pl45m4P Offline
            Pl45m4
            wrote on last edited by Pl45m4
            #5

            @FCTravassos

            Is the error message coming from QtCreator or Qt Design Studio ?

            Because you seem to create a QML project and your Kit doesn't seem fully configured for this


            If debugging is the process of removing software bugs, then programming must be the process of putting them in.

            ~E. W. Dijkstra

            1 Reply Last reply
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            • cristian-adamC cristian-adam

              @FCTravassos That's the Qt version. You should make a screenshot of the Kits page, with the details of the active kit.

              F Offline
              F Offline
              FCTravassos
              wrote on last edited by
              #6

              @cristian-adam said in Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.:

              @FCTravassos That's the Qt version. You should make a screenshot of the Kits page, with the details of the active kit.

              img.png

              @Pl45m4 said in Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.:

              @FCTravassos

              Is the error message coming from QtCreator or Qt Design Studio ?

              Because you seem to create a QML project and your Kit doesn't seem fully configured for this

              The message is coming from Qt Creator

              jsulmJ 1 Reply Last reply
              0
              • F FCTravassos

                @cristian-adam said in Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.:

                @FCTravassos That's the Qt version. You should make a screenshot of the Kits page, with the details of the active kit.

                img.png

                @Pl45m4 said in Cannot open this QML document because of an error in the QML file: Line 0: The Design Mode requires a valid Qt kit.:

                @FCTravassos

                Is the error message coming from QtCreator or Qt Design Studio ?

                Because you seem to create a QML project and your Kit doesn't seem fully configured for this

                The message is coming from Qt Creator

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #7

                @FCTravassos Which Kit is selected when you try to open that QML file?

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                F 1 Reply Last reply
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                • jsulmJ jsulm

                  @FCTravassos Which Kit is selected when you try to open that QML file?

                  F Offline
                  F Offline
                  FCTravassos
                  wrote on last edited by
                  #8

                  @jsulm It's the Desktop Qt 6.9.1 MinGW 64-bit.

                  img.png

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                  • cristian-adamC Offline
                    cristian-adamC Offline
                    cristian-adam
                    wrote on last edited by
                    #9

                    Which type of project are you trying to use? C++ or Python?

                    At https://forum.qt.io/topic/158263/line-0-the-design-mode-requires-a-valid-qt-kit there a similar case.

                    1 Reply Last reply
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