我一直有一个错误与启动我的flutter应用程序在我的iPhone模拟器。

这就是我得到的。

Xcode输出：错误：无法以合理的空安全运行，因为以下依赖项不支持空安全：

 - package:font_awesome_flutter
 - package:flutter_icons
 - package:carousel_slider

For solutions, see https://dart.dev/go/unsound-null-safety
Failed to package /Users/roseanne/test_app.
Command PhaseScriptExecution failed with a nonzero exit code
note: Using new build system
note: Planning
note: Build preparation complete
note: Building targets in parallel
warning: Capabilities for Signing & Capabilities may not function correctly because its entitlements use a placeholder team ID. To resolve this, select
a development team in the Runner editor. (in target 'Runner' from project 'Runner')

无法为模拟器生成应用程序。在iPhone12 Pro Max上启动应用程序时出错。