'ATL transformation cannot open the output XMI file of the transformation

Please I need help. I have created the source metamodel (user story model) and the destination metamodel (XPDL) I have created the source model (US_Model.xmi) and the transformation ATL file (rules.atl) but when I run the ATL file the destination model (XPDL_Model) is generated, but when I click on it I have an error which I don't know the cause if someone can help me.

Errors encountred:

enter image description here Structure of ATL project :

enter image description here

ATL file :

-- @path MM=/US_2_Xpdl/Metamodels/UserStory.ecore
-- @path MM1=/US_2_Xpdl/Metamodels/XPDL_V2.ecore

module rules;
create OUT : MM1 from IN : MM;

rule main_transformation {
    from
        userStory : MM!UserStory
    to 
        activity1 : MM1!Activity (
            id <- userStory.id,
            name <- userStory.values.value
        ),
        process1 : MM1!Process(
            activity <- activity1
        ),
        Pool : MM1!Pool(
            name <- userStory.roles.name,
            process <- process1
        )
        
}

XPDL.ecore file :

enter image description here

ATL configuration panel : enter image description here

eclipse-emfmde


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