Hi Tominna,
welcome to OSM. This changeset has created several errors like duplicate nodes and overlapping ways:

https://tools.geofabrik.de/osmi/?view=geometry&lon=17.71243&lat=40.65850&zoom=16&baselayer=Geofabrik%20Standard&overlays=self_intersection_ways%2Cself_intersection_points%2Csingle_node_in_way%2Cduplicate_node_in_way

https://tools.geofabrik.de/osmi/?view=routing&lon=17.85872&lat=40.64920&zoom=12&baselayer=Geofabrik%20Standard&overlays=duplicated_edges

https://overpass-api.de/achavi/?changeset=146034057


I have reverted it to fix those issues. Please watch out for the errors your editor shows you (see the list above). Please study the basics of OSM before you continue:

https://wiki.openstreetmap.org/wiki/Beginners_Guide_1.6

Kind regards
Guido