error in qml c++ integration

[Marito Mesquita]

hi can someone please tell me why my qml c++ integration always give these errors?
C:\Qt\5.11.2\mingw53_32\include\QtQml\qqmlprivate.h:98: error: call of overloaded 'Calcul()' is ambiguous

C:\Qt\5.11.2\mingw53_32\include\QtQml\qqmlprivate.h:107: error: use of deleted function 'QQmlPrivate::QQmlElement<Calcul>::QQmlElement()'
void createInto(void *memory) { new (memory) QQmlElement<T>; }
^

[Marito Mesquita]

[Pablo J. Rogina]

@Marito-Mesquita what about sharing your code?

[dheerendra]

Did you create default qtquick project ? Does the default project gives the same error ? Error in image posted shows that you did not include qqmlappengine class. Did you including this ? Aslo please share sample code which has error.

[Marito Mesquita]

@Pablo-J.-Rogina

hi this is the code; it's the basic code from main function. i have included the qqmlapplicationengine, and the error persists