Warning: "ecmascriptdatamodel" plugin not found after deployment.

Mr.Floppy

Hello there,

currently I am playing around with QScxmlStateMachine in a Qt 6.2.3 Widgets application in Windows 10.
Everything works fine, when I run the program inside Qt Creator 6.0.2, but when I build my .exe with qmake, move it to a different location and run windeployqt, the application crashes with the following warnings:

Warning: "ecmascriptdatamodel"  plugin not found.
Warning: No data-model instantiated

So it does not find the ECMAScript data model, which recently moved to a plugin according to: Ecmascript data model moved to a plugin

I checked the messages with QT_DEBUG_PLUGINS=1:

Debug: Got keys from plugin meta data QList("ecmascriptdatamodel")
Debug: Cannot load library D:\Example_InvokedBlinker\scxmldatamodel\qscxmlecmascriptdatamodel.dll: Das angegebene Modul wurde nicht gefunden.
Warning: QLibraryPrivate::loadPlugin failed on "D:/Example_InvokedBlinker/scxmldatamodel/qscxmlecmascriptdatamodel.dll" : "Cannot load library D:\\Example_InvokedBlinker\\scxmldatamodel\\qscxmlecmascriptdatamodel.dll: Das angegebene Modul wurde nicht gefunden."
Warning: "ecmascriptdatamodel"  plugin not found.
Warning: No data-model instantiated

So I copied C:\Qt\6.2.3\mingw_64\plugins\scxmldatamodel\qscxmlecmascriptdatamodel.dll to D:\Example_InvokedBlinker\scxmldatamodel\, but the Warning stays the same.

When I change nothing else and run the .exe from a C:\Qt\6.2.3\mingw_64\bin\qtenv2.bat command prompt however, the .dll get's loaded as it is supposed to be.

Can anybody tell me how to deploy a qmake widgets application using QScxmlStateMachine?
Does qscxmlecmascriptdatamodel.dll have other dependencies it does not tell me about?

Thank you!

Mr.Floppy

Mr.Floppy

I got it by checking qscxmlecmascriptdatamodel.dll with Dependency Walker.

It depends on Qt6QML.dll which again depends on Qt6Network.dll.

So basically all of these have to be present in the application root folder to run a QScxmlStateMachine:

\scxmldatamodel\qscxmlecmascriptdatamodel.dll
LIBGCC_S_SEH-1.DLL
LIBWINPTHREAD-1.DLL
LIBSTDC++-6.DLL
QT6CORE.DLL
QT6QML.DLL
QT6NETWORK.DLL
QT6SCXML.DLL

Maybe this is useful for someone else?

SGaist

Hi and thanks for the information,

Since windeployqt should handle that for you, there might be a bug it the list of dependencies to deploy for that module in it.

You should check the bug report system to see if there's already something about that.