cocoa pods 报错 [!] Invalid `Podfile` file:

cocoa pods pod install 是报错
[!] Invalid Podfile file: syntax error, unexpected end-of-input, expecting keyword_end.

# from /Users/gaoxiaohui/Desktop/123/Podfile:3
# -------------------------------------------
# target 'CC' do

pod 'AFNetworking', '~>2.3.1'
# -------------------------------------------