Hi KamanaEsperance,
this changeset has created a lot of errors regarding self intersecting lines:

https://tools.geofabrik.de/osmi/?view=areas&lon=34.25430&lat=1.23120&zoom=15&baselayer=Geofabrik%20Standard&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

https://overpass-api.de/achavi/?changeset=132779741

Obviously you have shifted the river without respecting the riverbed.

Can you please fix this?

You may also like to educate yourself about the internal validator of JOSM to avoid uploading such errors:

https://wiki.openstreetmap.org/wiki/JOSM/Validator

Kind regards
Guido