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Unable to find the platform plugin.

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  • saitejS Offline
    saitejS Offline
    saitej
    wrote on last edited by
    #1

    Hi all,

    I am unable to deploy my application while using Qt_5_15_0_MinGW_32_bit-Release version. For Qt_5_14_0_MinGW_32_bit-Release version also, I had faced a similar problem but this link helped me solve my issue as they gave a link to a new windeployqt executable. Can i find a solution for the latest QT Version also?

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      What options are you passing to windeployqt ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      2
      • saitejS Offline
        saitejS Offline
        saitej
        wrote on last edited by
        #3

        @SGaist
        windeployqt.exe --quick --release --qmldir ../../app_name/ .

        mrjjM 1 Reply Last reply
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        • saitejS saitej

          @SGaist
          windeployqt.exe --quick --release --qmldir ../../app_name/ .

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #4

          @saitej
          Hi
          What platform do you see this "Unable to find the platform plugin" on ?
          I have had some cases where Linux would show this after a upgrade to the Os.

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          0
          • saitejS Offline
            saitejS Offline
            saitej
            wrote on last edited by
            #5

            @mrjj

            Windows. I have built on the same system for previous versions of QT. With QT 5.15, i am getting the errors.

            With MSVC:

            The application gets build successfully but when I run the executable it crashes.

            With Mingw: I get this error

            d1cb6a0d-ea07-4b0e-ab84-cd110ba25851-image.png

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            • mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #6

              Hi
              Could you try with
              --compiler-runtime
              as paramter also. MinGW has some runtime files and I wonder if you get
              those included too.

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              • saitejS Offline
                saitejS Offline
                saitej
                wrote on last edited by
                #7

                @mrjj said in Unable to find the platform plugin.:

                --compiler-runtime

                I tried it out still gives the same error. Updated cmd for your reference.

                windeployqt.exe --quick --release --compiler-runtime --qmldir ../../appfolder/ .
                
                mrjjM 1 Reply Last reply
                0
                • saitejS saitej

                  @mrjj said in Unable to find the platform plugin.:

                  --compiler-runtime

                  I tried it out still gives the same error. Updated cmd for your reference.

                  windeployqt.exe --quick --release --compiler-runtime --qmldir ../../appfolder/ .
                  
                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #8

                  @saitej
                  Ok and the generated folder does have the platform sub folder with the DLL in ?

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                  • saitejS Offline
                    saitejS Offline
                    saitej
                    wrote on last edited by
                    #9

                    no folder is generated inside the release directory

                    mrjjM 1 Reply Last reply
                    0
                    • saitejS saitej

                      no folder is generated inside the release directory

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #10

                      @saitej
                      Yes i mean , it does get the right subfolder structure ?
                      http://www.tripleboot.org/?p=138

                      alt text

                      1 Reply Last reply
                      1
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #11

                        In one of the bug report linked in the thread you got inspiration from, it's explicitly stated that you should not use --release with the pre-built binary. They are built in release mode with debug symbols.

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        1
                        • saitejS Offline
                          saitejS Offline
                          saitej
                          wrote on last edited by saitej
                          #12

                          @SGaist

                          After removing --release from the command, I could successfully deploy it with out the platform plugin error. Although, there is a strange thing happening. It is missing out the texttospeech plugin. I get this error when I run the executable from Qt creator after using the windeployqt

                          No text-to-speech plug-ins were found.

                          The same error I had shared on this post.

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #13

                            And that was solved using Qt 5.15, correct ?

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                            saitejS 1 Reply Last reply
                            0
                            • SGaistS SGaist

                              And that was solved using Qt 5.15, correct ?

                              saitejS Offline
                              saitejS Offline
                              saitej
                              wrote on last edited by saitej
                              #14

                              @SGaist

                              Ya. but I had not used windeployqt in the release folder at that time. As soon as I run windeployqt, i get this error No text-to-speech plug-ins were found. and the speech part does not work

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #15

                                Check the corresponding plugins in your Qt installation and copy them over to your deployment folder.

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                saitejS 1 Reply Last reply
                                0
                                • SGaistS SGaist

                                  Check the corresponding plugins in your Qt installation and copy them over to your deployment folder.

                                  saitejS Offline
                                  saitejS Offline
                                  saitej
                                  wrote on last edited by saitej
                                  #16

                                  @SGaist

                                  Yes. I have already tried copying the following relevant texttospeech files from the Qt installation directory. Hope I have not missed out any? Also, is it possible that texttospeech does not work in a Qt Quick Application?

                                  5c902790-8fab-4560-ab46-78900df700b6-image.png

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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #17

                                    It's the deployed version that currently has issues, correct ?

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    saitejS 1 Reply Last reply
                                    0
                                    • SGaistS SGaist

                                      It's the deployed version that currently has issues, correct ?

                                      saitejS Offline
                                      saitejS Offline
                                      saitej
                                      wrote on last edited by
                                      #18

                                      @SGaist

                                      Yes Sir.

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                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #19

                                        Did you add the -texttospeech option to your windeployqt call ?

                                        Interested in AI ? www.idiap.ch
                                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                        saitejS 1 Reply Last reply
                                        0
                                        • SGaistS SGaist

                                          Did you add the -texttospeech option to your windeployqt call ?

                                          saitejS Offline
                                          saitejS Offline
                                          saitej
                                          wrote on last edited by
                                          #20

                                          @SGaist said in Unable to find the platform plugin.:

                                          -texttospeech

                                          Ya I have tried adding -texttospeech in the windeployqt command also but no success. It still gives the same No text-to-speech plug-ins were found. error

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