使用Cocoapods安装时出现Mapfit问题

Question

我想用Cocoapods安装Mapfit。 我的pod文件内容是：

# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

target 'Mapfit' do
  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!

  # Pods for Mapfit
pod 'Mapfit'
end

在安装吊舱时，会出现类似以下错误消息：

[！]无法读取规格/Users/Code/Desktop/Mapfit/Pods/Tetragon-mobile/Release/Tangram.framework/LICENSE的许可证文件Tetragon-mobile (1.3.1)

[！]无法读取规格/Users/Code/Desktop/Mapfit/Pods/Tetragon-mobile/Release/Tangram.framework/LICENSE的许可证文件Tetragon-mobile (1.3.1)

请大家帮忙。