Hi glemco,
your recent edits have left behind several duplicate nodes:

https://tools.geofabrik.de/osmi/?view=geometry&lon=8.09257&lat=45.20374&zoom=12&baselayer=Geofabrik%20Standard&overlays=self_intersection_ways%2Cself_intersection_points%2Csingle_node_in_way%2Cduplicate_node_in_way

https://overpass-api.de/achavi/?changeset=145223586

Can you please fix this?
Kind regards
Guido