Build operation failed without specifying any errors for React Native XCode project

[azghibarta]

have a React Native project that works fine most of the time(Android and iOS). But sometimes out of nowhere I receive this error when I am trying to build the Xcode project (Xcode or react-native run-ios):

Build operation failed without specifying any errors.
Individual build tasks may have failed for unknown reasons.
One possible cause is if there are too many (possibly zombie)
processes; in this case, rebooting may fix the problem.
Some individual build task failures (up to 12) may be listed below.

How do I solve this? Push to a branch on git, fresh clone, npm install, and all is working fine for a period. And after that the problem will repeat. Making fresh clones of project each time is a pain and takes long time. Is there another way or something that I don't know?

Maybe a some files that are in .gitignore is causing the problems, and after a fresh clone that solves the problem. This is the .gitignore file for my iOS project:

build/
*.pbxuser
!default.pbxuser
*.mode1v3
!default.mode1v3
*.mode2v3
!default.mode2v3
*.perspectivev3
!default.perspectivev3
xcuserdata
*.xccheckout
*.moved-aside
DerivedData
*.hmap
*.ipa
*.xcuserstate
project.xcworkspace

stackoverflow link

[MatthieuLemoine]

I have this issue too since updating to react-native 0.39 from 0.34 yesterday. Which version do you use @kingadrianzghibarta ?

[azghibarta]

@MatthieuLemoine I use version 0.38.1, on 0.38.0 this issue wasn't present.

[MatthieuLemoine]

@kingadrianzghibarta Have you tried to downgrade RN to 0.38.0 ?

[azghibarta]

@MatthieuLemoine No, I am waiting 0.40 version.

[miladebadi]

any update? I have the same problem

[azghibarta]

@knot123 no update at the moment. Now I am using 0.40 version and this problem appears only some times, and I think is somehow related to Android Studio, because very often this problem occurs after making some operations in AS.

[MatthieuLemoine]

@AdrianZghibarta i also think that it's related to Android Studio as it began to happen to me when i started to test my app on Android. I was only testing on iOS before that for several months without problems.

[Crash--]

@MatthieuLemoine You're right. It seems to be related to Android Studio. Every time I launch it, I've have this issue with XCode just after :(

[MatthieuLemoine]

@Crash-- I definitely think that it's related to Android Studio as I had no issue for a week before i opened Android Studio again and build from it instead of building from CLI and then XCode build broke again 😞 .

[MatthieuLemoine]

Nuking node_modules and avoiding to build with Android Studio seems to fix this issue.

[Crash--]

I still got this issue after upgraded to RN 0.42. Even with a fresh project. I had to copy/paste my node_modules every time I want to write some native Android Code... Pretty annoying :(

[jpamarohorta]

Any idea why this sometimes happens? I'm having the same problem and I usually develop iOS e Android +- at the same time

[robwalkerco]

@jpamarohorta Not sure why it happens, but I can fix it by deleting node_modules and re-running yarn (or npm install).

I can only guess that Android Studio is somehow changing stuff in node_modules but as I ignore the folder in git, I have not been able to see what. Perhaps we should try adding it to git, then see what has changed when the error occurs? Will report back what I find!