Reply to Xcode 15.0 Beta 5, Symbol not found: _$s9SwiftData014DefaultBackingB0C3forACyxGxm_tcfC Having the same issue with the exact same missing symbol for SwiftData on an app that had no changes, but started crashing on the ios was updated to 17.0 (21A5303d) and macOS to 14.0 Beta (23A5312d). Apple crashes on launch in both versions. App & System Services iCloud & Data Aug ’23