Why cant I solid extrude this object

i’m trying to extrude this shape into a solid 3D extrusion. but it will not. how can i fix it?

sample.3dm (30.9 KB)

If you look at the front view you will see that the curve is not planar.

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thanks adam

You can use SetPt to make the curve planar.

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thanks David,

First put all the line points on the same z plane
then Extrude them
i downloaded your file and it worked.