Hi Wamdai Isah Gazama,
your recent edits have left behind several errors in the OSM database regarding self intersecting ways:

https://tools.geofabrik.de/osmi/?view=geometry&lon=7.41313&lat=10.53779&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=147277893

Can you please fix this?

This kind of result is very typical for JOSM users who just press "o" and do not care about the results. You can apply the internal validator to avoid uploading such errors.

Kind regards
Guido
