Error when I tried to submit app to Apple Store

I dont know how can i submit my app to Apple Store again, I'm trying about 2 days, but i get this error below... Can Anybody help me?

Error Xamarin

Solution

It is a requirement from Apple that your app must support 64-bit. So you have to update your project, or they will not accept it. No way around that, if you want it to be on the App Store.