Unable to install Custom iOS Expo Client: "(null) is Already Installed"

Hi, I am trying to install a Custom iOS Expo Client on my iPhone. When I click “Tap to Install” on the expo build page, it says:

(“null)” is Already Installed
“(null)” has the same Bundle ID as “(null)” and can’t be installed. To continue, delete “(null)” from your device and try again.

I found this thread on apple discussions, but I don’t see any unnamed app on my app list. This post suggests setting legacy build mode, and I don’t know if that is possible with expo.

Thanks for any help!

expo diagnostics

  Expo CLI 3.21.5 environment info:
    System:
      OS: Linux 5.3 Ubuntu 19.10 (Eoan Ermine)
      Shell: 5.0.3 - /bin/bash
    Binaries:
      Node: 12.18.0 - /usr/bin/node
      Yarn: 1.22.4 - /usr/bin/yarn
      npm: 6.11.2 - /usr/local/bin/npm
    npmPackages:
      expo: ~37.0.3 => 37.0.12 
      react: ~16.9.0 => 16.9.0 
      react-dom: ~16.9.0 => 16.9.0 
      react-native: https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz => 0.61.4 
      react-native-web: ~0.11.7 => 0.11.7
1 Like

Same issue, thanks for any advice.

Expo CLI 3.18.0 environment info:
    System:
      OS: macOS 10.15.4
      Shell: 3.2.57 - /bin/bash
    Binaries:
      Node: 13.12.0 - /usr/local/bin/node
      Yarn: 1.22.4 - /usr/local/bin/yarn
      npm: 6.14.4 - /usr/local/bin/npm
    IDEs:
      Android Studio: 3.6 AI-192.7142.36.36.6392135
      Xcode: 11.5/11E608c - /usr/bin/xcodebuild
    npmPackages:
      expo: ^37.0.0 => 37.0.10 
      react: 16.9.0 => 16.9.0 
      react-native: https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz => 0.61.4 
    npmGlobalPackages:
      expo-cli: 3.18.0
1 Like

Same here. Did you guys make it work?

Expo CLI 3.20.9 environment info:
    System:
      OS: macOS Mojave 10.14.5
      Shell: 3.2.57 - /bin/bash
    Binaries:
      Node: 12.16.3 - ~/.nvm/versions/node/v12.16.3/bin/node
      Yarn: 1.22.4 - /usr/local/bin/yarn
      npm: 6.14.4 - ~/.nvm/versions/node/v12.16.3/bin/npm
    IDEs:
      Android Studio: 3.5 AI-191.8026.42.35.5900203
      Xcode: 11.3.1/11C504 - /usr/bin/xcodebuild
    npmPackages:
      expo: ^37.0.0 => 37.0.11
      react: 16.9.0 => 16.9.0
      react-dom: 16.9.0 => 16.9.0
      react-native: https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz => 0.61.4
      react-native-web: ^0.11.7 => 0.11.7
      react-navigation: ^4.0.10 => 4.3.9
    npmGlobalPackages:
      expo-cli: 3.21.5

Having the same issue

Expo CLI 3.20.9 environment info:
System:
OS: macOS 10.15.4
Shell: 5.7.1 - /bin/zsh
Binaries:
Node: 12.16.1 - ~/.nvm/versions/node/v12.16.1/bin/node
npm: 6.13.4 - ~/.nvm/versions/node/v12.16.1/bin/npm
IDEs:
Xcode: 11.4.1/11E503a - /usr/bin/xcodebuild
npmPackages:
expo: ~37.0.3 => 37.0.12
react: ~16.9.0 => 16.9.0
react-dom: ~16.9.0 => 16.9.0
react-native: https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz => 0.61.4
react-native-web: ~0.11.7 => 0.11.7

BTW this is the screenshot of the error message:

In addition to this thread I opened an issue on expo-cli github repo:

Any comments or advices are warmly welcome…

Same issue here. A workaround is to download the .ipa from the Build Details page and manually install it through iTunes.

Good tip, however I have a 2011 Mac that can’t do this (my dev machine is Linux). Thank you for opening an issue, @dameyerdave

Same issue, here. The web page doesn’t appear to have a build details part either, so I can’t seem to download for the workaround. @mgronblad

The build dashboard does not reflect the expo-client.
This same error shows up even after deleting the existing Expo app from my device.

Can anyone having this issue share their app.json file here?

Edit: nvm, was able to find one in the linked github issue :+1:

{
  "expo": {
    "name": "ABC",
    "slug": "abc",
    "privacy": "public",
    "platforms": ["ios", "android"],
    "version": "0.0.6",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": ["**/*"],
    "ios": {
      "supportsTablet": false,
      "bundleIdentifier": "my.build.identider",
      "buildNumber": "0.0.6"
    },
    "facebookScheme": "fb123456",
    "facebookAppId": "123456",
    "facebookDisplayName": "foobar"
  }
}

Here is the build if it helps

https://expo.io/client/wMFVcNWwyWausywFhGWbxr

@charliecruzan thanks for looking into this! Greatly appreciated! This is currently blocking our development for our latest update, so if there is any way I can help speed up the process, please let me know! I appreciate such an amazing project you and your team have made!

This sounds like a viable route but I don’t see the option to download on the webpage anymore. did you do this from your computer?

Same Issue. Here is my expo diagnostics output also.

❯ expo diagnostics

  Expo CLI 3.21.9 environment info:
    System:
      OS: macOS 10.15.5
      Shell: 5.7.1 - /bin/zsh
    Binaries:
      Node: 14.4.0 - ~/.nvm/versions/node/v14.4.0/bin/node
      Yarn: 1.22.4 - ~/.nvm/versions/node/v13.13.0/bin/yarn
      npm: 6.14.5 - ~/.nvm/versions/node/v14.4.0/bin/npm
    IDEs:
      Xcode: 11.5/11E608c - /usr/bin/xcodebuild
    npmPackages:
      expo: ^37.0.0 => 37.0.12 
      react: 16.9.0 => 16.9.0 
      react-dom: 16.9.0 => 16.9.0 
      react-native: https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz => 0.61.4 
      react-native-web: ^0.11.7 => 0.11.7 
      react-navigation: ^4.3.9 => 4.3.9 

and a screenshot…

cheers

I couldn’t find this option eather…

Thanks everyone for your patience and for reporting this, we’ve discovered the root cause and a fix should be deployed soon (will update here once it is)

Hello again everyone- this should be fixed in production now, and doesn’t even require an expo-cli update! Let me know if you are still seeing the issue

1 Like

testing now - will post as soon as I can confirm. Thanks @charliecruzan!

Working now. Thanks again.