Does Xcode 13.4 and Flutter 3.0 work fine?
Previous version (Xcode 13.3 and Flutter 2.10) have some build time errors. *xcodebuild[62848:6695836] Requested but did not find extension point with identifier Xcode.IDEKit.ExtensionPointIdentifierToBundleIdentifier for extension Xcode.DebuggerFoundation.AppExtensionToBundleIdentifierMap.watchOS of plug-in com.apple.dt.IDEWatchSupportCore ** BUILD FAILED ***