I've determined this to be a bug with macOS 26 beta. I opened a previously submitted project, and encountered the same error where I had not seen it before.

So I figured something out - if I remove App Sandbox under the Signing and Capabilities tab, the error goes away. This pin points where the issue is coming from. But now, I can't find a way to re-enable App Sandbox without getting the console error again. Any thoughts? I've already tried the following: Removing and re-adding my developer account Clearing Derived Data Downloading the latest Xcode (s)