Unable to build react native project after updating to xcode 11.0

Question

I have a react native project running on react native version 0.59.8 , and xcode version 10.3. Somehow my xcode got updated to version 11.0 and after that i am unable to build the project using react-native run-ios command.

I have tried cleaning up the build and building again. But that doesn't help.

I am getting the following error:

CoreData: annotation:  Failed to load optimized model at path '/Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/Frameworks/InstrumentsPackaging.framework/Versions/A/Resources/XRPackageModel.momd/XRPackageModel 9.0.omo'
error Could not find iPhone X simulator.

How to fix this issue?

refer https://stackoverflow.com/questions/46463536/coredata-annotation-failed-to-load-optimized-model-react-native and also refer https://github.com/urbanairship/ios-library/issues/167 — Rizwan Ahmed Shivalli, Sep 23 '19 at 05:47
I have tried these things @rizwan, but doesn't seem to be fixing the issue. issue is something related to the new data model introduced, i guess! — Ganesh Krishna, Sep 23 '19 at 13:11
@GaneshKrishna you could try and directly run react-native app from Xcode instead of react-native-run-ios. — Rizwan Ahmed Shivalli, Sep 23 '19 at 13:25
@GaneshKrishna start your IPhoneX simulator first and then run the project. — Rizwan Ahmed Shivalli, Sep 23 '19 at 13:41
I have tried these steps as well, doesn't seem to work! - @Rizwan — Ganesh Krishna, Sep 24 '19 at 03:40
Duplicate question: https://stackoverflow.com/questions/58207838/react-native-run-ios-could-not-find-iphone-x-simulator-xrpackagemodel-9-0-omo/58266877#58266877 — Juangui Jordán, Oct 07 '19 at 09:37

score 6 · Answer 1 · answered Sep 23 '19 at 02:51

6

Not sure about the first error, but I have same problem for second error error Could not find iPhone X simulatorafter upgrade to XCode 11

Basically I changed the line 53 in the react native project /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js, from simulator.isAvailable !== 'YES' to simulator.isAvailable !== true.

The root cause is new XCode 11 changed the simulator metadata format, and react native findMatchingSimulator method is strongly coupled to the previous format.

answered Sep 23 '19 at 02:51

Alex Bin Zhao

398
3
11

I'm trying to solve the same issue but don't have the file `findMatchingSimulator.js` to edit at all. I'm on react-native 0.59.10. What version is this solution for? – Shinlos Sep 23 '19 at 07:04
3

@shinlos With RN 0.59.9 , you can find this file in `node_modules/@react-native-community/cli/build/commands/runIOS/` – Shaun Saker Sep 23 '19 at 10:07
The second error is not the issue, i am not able to build the project because of first error. – Ganesh Krishna Sep 23 '19 at 11:31
Line 36 if you're on older versions or React Native. Also, thanks!! – user1791914 Sep 23 '19 at 15:42
Issue is with not finding .omo files. How to generate or add them? – Ganesh Krishna Sep 24 '19 at 03:40

score 5 · Answer 2 · answered Sep 27 '19 at 03:45

I was able to fix the "Could not find iPhone X simulator" error.

These are the steps to fix the above error:

Run the command find . -iname findMatchingSimulator.js to locate findMatchingSimulator.js file.

In this file, Change the code from

if (simulator.availability !== '(available)' && simulator.isAvailable !== 'YES') {
        continue;
      }

to

if (simulator.availability !== '(available)' && simulator.isAvailable !== true) {
        continue;
      }

By doing this simulator error is resolved. But Still the other error

CoreData: annotation:  Failed to load optimized model at path '/Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/Frameworks/InstrumentsPackaging.framework/Versions/A/Resources/XRPackageModel.momd/XRPackageModel 9.0.omo'

exists, which makes the build to fail. If I install xcode 10.3 and run the command react-native run-ios, it still works. Hope the issue is clear. Any fixes for this issue which occurs in xcode 11?

score 4 · Answer 3 · answered Oct 01 '19 at 20:55

Two things:

With Xcode 11, make sure you're using react-native-community/cli version 1.9.8 minimum, as it integrates the fix for Xcode 11 simulators new metadata format:

https://github.com/react-native-community/cli/releases/tag/v1.9.8
Also, the iPhone X simulator is no longer available at least on my end. You can use an iPhone 11 instead :

react-native run-ios --simulator='iPhone 11'

score 3 · Answer 4 · answered Oct 03 '19 at 03:43

In my case:

react: 16.8.3
react-native: 0.59.9
Xcode: 11.0

Add iPhone X simulator: Open Xcode => Window => Devices and Simulators => Simulators => Press Plus button at the bottom
Install latest version of cocoapods: sudo gem install cocoapods
Re-Install cocoapods in project: Open project folder => ios => delete Podfile.lock, Pods folder, build folder => cd ios && pod install
react-native run-ios Done!

Himanshu Sharma · Answer 5 · 2019-09-24T11:28:19.747

1

After upgrading my XCode to version 11, in XCode simulators list it only shows ios 13 simulators as available, so we need to add previous version simulators, to do so, in XCode go to preferences -> Components -> and download and install a previous version ios simulator (ios 11.0 in my case), after doing so it must show other simulators in available simulator list. Clear all cache and re-run the react-native run-ios command and it should work now.

edited Sep 24 '19 at 11:28

answered Sep 24 '19 at 09:51

Himanshu Sharma

13
4

I have posted the updates above! still facing the issue in xcode 11. works fine if i go back to xcode 10.3! Thanks! – Ganesh Krishna Sep 27 '19 at 03:46

score 1 · Answer 6 · answered Sep 25 '19 at 12:18

1

Try run specifying simulator version.

react-native run-ios --simulator="iPhone 11 Pro Max"

answered Sep 25 '19 at 12:18

Amar Zanashir

11
1

It looks like an issue with .omo file, i was able to fix the "Could not find iPhone X simulator" error. – Ganesh Krishna Sep 27 '19 at 03:40

score 0 · Answer 7 · answered Sep 25 '19 at 13:36

0

I upgraded "react-native" to "^0.61.1" and it worked for me

answered Sep 25 '19 at 13:36

Metehan Senol

651
4
10

This may work, but i cant update to ^0.61 as of now, looking for a work-around for the 0.59.8 version. Thanks! – Ganesh Krishna Sep 27 '19 at 03:38

score 0 · Answer 8 · answered Sep 30 '19 at 17:56

I was having this same issue, and even went back to xCode 10.3....and still had the same issue. Then I came across this https://github.com/react-native-community/cli/pull/414 . Sounded to me like maybe they had fixed the issue and that I was running with an old version of the CLI. Proceeded to delete the entry in my lock file and run npm install. Working now. CLI is up to 1.11.2 https://github.com/react-native-community/cli

score 0 · Answer 9 · answered Oct 22 '19 at 12:42

Run can run xcrun simctl list devices in a terminal to make sure you have the iPhone X simulator installed. If you can't see it in the list you need to add it to Xcode through Window -> Devices and Simulators -> Simulators (click the + in the bottom left)

Unable to build react native project after updating to xcode 11.0

9 Answers9