Problems validating fields in app.json.

Please provide the following:

  1. SDK Version: 42
  2. Platforms(Android/iOS/web/all): all

I have an internal distribution build, and Im trying to implement/test expo-updates, but when i run expo publish i get this error:

Error: Problem validating fields in app.json.
 • should NOT have additional property 'jsEngine'.

I couldn`t find any information regarding this problem.

Hey @georgipavlov, can you let me know what version of expo-cli you are using? I just tested on both SDK42 and 43 without issue.


Hey @adamjnav , I’m using expo version 4.8.1, and I’m in the Bare workflow. I guess that I forgot to add that in app.json I have - "jsEngine": "hermes" ,because im using Reanimated 2 .Now I removed the jsEngine, and the publish worked.I thought it would break the Reanimated library, but somehow it still works.

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