New place error: geometry has too many observations

When trying to create a new place using a .kml file (at https://www.inaturalist.org/places/new), I receive an error message (see screenshot below). I’m just adding in a new place, nothing fancy. It is a relatively large place, as its a hiking corridor about 100 miles long.

Is there a specific reason why I may be getting this error or any way for me to fix it? Thank you!

Screenshot: