Hi Olayinka Omoboyede,
this changeset has created several errors in the OSM database regarding self intersecting and displaced ways:

https://tools.geofabrik.de/osmi/?view=geometry&lon=7.41391&lat=10.53266&zoom=14&baselayer=Geofabrik%20Standard&overlays=self_intersection_ways%2Cself_intersection_points%2Csingle_node_in_way%2Cduplicate_node_in_way

https://overpass-api.de/achavi/?changeset=147874781

I have just reverte it to fix those issues. You can avoid uploading such errors by using JOSM  internal validator.

Kind regards
Guido