Crash while processing swift project

[josecostamartins]

hello, first of all, thank you for providing this tool!

While I was running the tool in one of my projects, I received this Fatal Error:

Fatal error: 'try!' expression unexpectedly raised an error: Swift.DecodingError.dataCorrupted(Swift.DecodingError.Context(codingPath: [], debugDescription: "The given data was not valid JSON.", underlyingError: Optional(Error Domain=NSCocoaErrorDomain Code=3840 "Unexpected end of file while parsing object." UserInfo={NSDebugDescription=Unexpected end of file while parsing object.}))): file /private/tmp/swiftoutline-20200601-37582-1c3dpan/SwiftOutline-0.0.3/Sources/SwiftOutlineKit/Emitter.swift, line 27

Any help would be appreciated