nested dataview with self-reference (sometimes empty)

Hi, I am trying to make a 5 generations family tree of items. Some of them can be empty. It does not work. Does someone has a solution? I tried the following: -using the tree view widget instead (misses some functionality options I need) -using nested data views over association (page does not load, probably because some are empty) -using nested data views with DS microflows (displays wrong information, probably because it tries to use the context item) -making a non persistent entity 'family tree’ and filling that with the items (does work for displaying, but makes the page load slowly and makes some of the extra functionality I need difficult needing a separate microflow for every item in the tree to navigate to the items detail page).
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