how to I convert the attached model to a sheet metal part?

Good morning,

I do a lot of sheet metal work, sometimes I need to create pans that have four sides that have arced flanges, see attached.  I have tried a few different ways, but always get an error message. I can create two edges with the correct returns, but four edges always fails,

Any help would be appreciated,  thank you in advance,

Steve

SolidworksSheet Metal