Payments-React-Native | An easy to use payments component in React Native

According to your github issue link,

You’re running react 0.59.x. This means you’ll be required to run

react-native link

For native libraries to be linked in iOS XCode.

An alternative method is linking the dependency in XCode, which can be found on the react native docs

Excerpt

Step 1 If the library has native code, there must be an .xcodeproj file inside its folder. Drag this file to your project on Xcode (usually under the Libraries group on Xcode);



Step 2 Click on your main project file (the one that represents the .xcodeproj) select Build Phases and drag the static library from the Products folder inside the Library you are importing to Link Binary With Libraries



Step 3 Not every library will need this step, what you need to consider is: Do I need to know the contents of the library at compile time? What that means is, are you using this library on the native side or only in JavaScript? If you are only using it in JavaScript, you are good to go! If you do need to call it from native, then we need to know the library's headers. To achieve that you have to go to your project's file, select Build Settings and search for Header Search Paths. There you should include the path to your library. (This documentation used to recommend using recursive, but this is no longer recommended, as it can cause subtle build failures, especially with CocoaPods.) 

For RN 0.60+ linking is done automatically.

Edit:

You can also install the SDK with cocoapods via the command in the directory /ios