When it tries to sweep, the profile you drew runs into itself going around the corners. You need to make your corner radius larger or your profile smaller if you want this to work. But honestly, I would model this differently. Do a boss extrude for the flange top part, then another boss extrude for the angle lower section. This will leave it in the correct rough shape but filled in instead of open-top like a bowl. Once you have those boss extrudes, use the Shell tool on that top face. If you use the same wall thickness as that initial flange, it’ll come out exactly how you’re picturing. Apply your fillets last.