cocos打包xcode工程,运行报错Unable to resolve build file: XCBCore.BuildFile()

<!-- cocos打包的xcode工程, 运行报错:Unable to resolve build file: XCBCore.BuildFile (The workspace has a reference to a missing target with GUID '79d71ebbcc59a2e880640b6a34c1bdf59976d97c913f0f92a6528252dcadbc42') cocos creator:2.12 xcode版本为:11.2.1 macbook air笔记本