title: RCTLog.h file not found error in Xcode, after adding import files in React Native app for Fabric crashlytics logs
body: <p>I installed Fabric with crashlytics in my React native app. Sometimes it is s a big problem to catch the error even if you have this setup in your app, because crashlytics don't show you the whole information about the error when your app is crashed. Therefore i decided to set logs from JS thread to Fabric, according this article <a href="https://medium.com/delivery-com-engineering/add-crashlytics-to-your-react-native-ios-app-69a983a9062a" rel="nofollow noreferrer">https://medium.com/delivery-com-engineering/add-crashlytics-to-your-react-native-ios-app-69a983a9062a</a>. And i has got this error <strong>'RCTLog.h' file not found</strong> after adding this lines of code to my AppDelegate.m:</p>
  
  <pre><code>#import &lt;asl.h&gt;
  #import "RCTLog.h"
  </code></pre>
  
  <p>I'm not so strong in SWIFT. Can you tell me please where can i find this files or maybe give me an example how can i create it please.</p>