在版本1.2.1之前，XPC服务目标在cocoapods上运行良好，但是在更新到1.3.1时，我收到以下错误：
[!] Unable to find host target(s) for Renderer. Please add the host targets for the embedded targets to the Podfile.
Certain kinds of targets require a host target. A host target is a "parent" target which embeds a "child" target. These are example types of targets that need a host target:
- Framework
- App Extension
- Watch OS 1 Extension
- Messages Extension (except when used with a Messages Application)
相关的podspec线是：
target 'Renderer' do
project 'Renderer/Renderer.xcodeproj'
platform :osx, '10.10'
pod 'HTMLKit', :git => 'https://github.com/iabudiab/HTMLKit.git'
end
有什么建议吗？
我尝试将此目标作为我主要目标的孩子，但这并不起作用。