Desktop.qml tries to set a value to a null property and read properties from null values
mainDelegate.containmentis a null value but it tries to set a variable to a property of it (which of course doesn't exist), causing
TypeError: Value is null and could not be converted to an object.
Invalid write to global property "contentX"caused by this line
root.containmentis a null value but it tries to read the property
activitiesView.nextContainmentis a null value but it tries to read the property
containment.availableScreenRect(and the next line) is a null value but it tries to read the properties