Not sure if this will help you but this worked for me!
https://www.reddit.com/r/unrealengine/comments/17kny3s/comment/k96f15d/?utm_source=share&utm_medium=web2x&context=3
…Added this to additional plist data in project settings. Looked at some of the possible reasons provided by apple. From looking at ue5 source code, it sets CFBundleSupportedPlatforms to “iPhoneOS iPhoneSimulator”, which might’ve been what was causing the error.
<key>CFBundleSupportedPlatforms</key><array><string>iPhoneOS</string></array>\n