Broke a river area multipolygon and I don't know how to fix it

Hi all,
I seem to have somehow broken this multi-polygon. It no longer renders on carto. However, I can’t figure out what I did to break it, and I’m not sure how I would find the point where I broke it. The changeset was a lot of work so I’d rather not undo the whole thing, so if anyone could point me in the right diretion that would be extremely helpful.

Relation:

The only thing I added to the relation:

The changeset:

Looks like the multipolygon had an overlapping inner and and outer way, making its geometry invalid.

I fixed it here: Changeset: 179375494 | OpenStreetMap

Thank you Zeke!

You’re welcome. Also since the river area multi-polygon was pretty big and extended up several different river branches I broke it into a few smaller pieces. Changeset: 179375848 | OpenStreetMap

Hopefully that makes it a bit easier to work around. Happy mapping!

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