Attached is the sheet metal. Edge-Flange5 gives me an error "The part intersects with itself after bend operation" - yet I see no self-intersection. What could possibly be the issue? Is it not DFM enough?
STEP file attached. There may be some external references in the Solidwork 2019 file so ignore any additional errors. I uploaded both.
After flattening, a problem will occur in this place - intersect with itself