Xcode 11 'Package Resolution failed' error

[ahmetfg]

Add Package Dependency feature in Xcode 11 gives the following error:

The package dependency graph can not be resolved; unable find any available tag for the following requirements:

https://github.com/Zewo/Reflection.git — 0.18.1..<1.0.0

and I found that advice given to a similar error:

I believe this is because you've missed out the products and targets section in the Package.swift file. A simple example can be found in JGProgressHUD's Packages.swift