The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions This is an error you will see often if you develop SwiftUI in Xcode. Know what it means? It means the compiler has given up, and you're on your own. The error points to a file and function, but the issue could be anywhere in your codebase. It might be a simple syntax error, or it might be code that is "too complex" for the compiler. Hopefully you commit frequently...