Expo not loading (React-Native) -- null Expo SDK version

7
votes

My app was working till today but now it looks like something happened to version 18 of Expo.
I got this error:

The experience you requested uses Expo SDK v(null), but this copy of Expo Client requires at least v20.0.0. The author should update their experience to a newer Expo SDK version.

I then:

  • Updated to Expo v20.0.0
  • Handled all unmet dependencies
  • yarn cache clean
  • rm -rf node_modules/
  • Reinstalled local node modules

and I'm still getting the same error.

What do I need to do to get Simulator to recognize that I am using the correct version of Expo?

Current environment:

  • Expo v20.0.0
  • react-native v0.47.0
  • Node v8.11.1
  • Xcode v9.3
  • Mac OS v10.13.4
1
xcodereact-nativeexpo
what is the version in your app.json? - Pritish Vaidya
"expo": "20.0.0" @PritishVaidya - cameck
Try this, maybe it'll . help - Pritish Vaidya
It was a good idea, it didn't work though. Even deleting the simulator. - cameck
@PritishVaidya I misread your first comment. And you suspicion was correct, I was missing "sdkVersion": "20.0.0" from my app.json. Adding it, rm-rf node_modules && yarn install && yarn run ios --reset-cache fixed that issue. Thanks! - cameck

1 Answers

7
votes

Thanks to @PritishVaidya for helping me figure this out.
The problem was simply that I was missing "sdkVersion": "20.0.0" from my app.json. The use of this is lined out in the Expo Docs.

For example:

{
  "expo": {
    "name": "My app",
    "slug": "my-app",
    "sdkVersion": "20.0.0",
    "privacy": "public"
  }
}