Unknown type name 'Block'

[ghost]

I'm adopting an iOS that was developed over two years ago and has been sitting around since. Naturally, the first thing I did after cloning the repo was to pod install the dependencies. While all was successful, in an initial attempt to build the app I was thrown two errors that repeat countless times. the read:

Unknown type name 'Block' 
Property with 'copy' attribute must be of object type

I'm wondering if you've seen these errors before and perhaps know how to remedy it?

Specs:
App Minimum deployment: 7.1
Base SDK 10.3
Xcode: 8.3.3
Compiler: Apple LLVM 8.1
Architectures: armv7 armv7s arm64

[ghost]

Update: problem was solved relying directly on github repo:

pod 'MGBoxKit', :git => 'https://github.com/sobri909/MGBoxKit', :branch => 'master'
pod 'MGEvents', :git => 'https://github.com/sobri909/MGEvents', :branch => 'master'
pod 'MGMushParser', :git => 'https://github.com/sobri909/MGMushParser', :branch => 'master'

[emadrazo]

Thanks!