error Failed to build iOS project We ran xcodebuild command but it exited with error code 65

Question

I ve build a react-native application and suddenly I get this error message on my terminal during run of the command react-native run-ios  The same code work fine 10 minutes ago and suddenly I get this error message  Please help

User · Answer

run pod install inside ios folder then go back to root folder and run npx react-native run-ios

User · Answer

cd ios  amp  amp  rm Podfile lock  amp  amp  pod install worked for me

User · Answer

If you don t have cocoa pods installed you need to   sudo gem install cocoapods   Then run   cd  ios pod install   delete the build folder in ios folder of your react native project  run   react-native run-ios   if error persists    delete build folder again open the  ios folder in Xcode navigate File -  Project Settings -  Build System -  change  Shared workspace settings and Per-User workspace settings   Build System -  Legacy Build System

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For me it caused by installing react-native-vector-icons and linking by running the react-native link react-native-vector-icons command   I just unlinked the react-native-vector-icons by following commands   react-native unlink react-native-vector-icons cd ios pod install cd    react-native run-ios   As I already installed an other icon library

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In my case  the issue was with my Xcode build scheme  When you run react-native run-ios you may see something like   info Found Xcode workspace  quot myproject xcworkspace quot    info Building  using  quot xcodebuild -workspace myproject xcworkspace -configuration Debug -scheme myproject -destination id xxxxxxxx-xxxxx-xxxxx-xxxx-xxxxxxxxx -derivedDataPath build myproject quot       In this case  there should be a scheme named myproject in your ios configurations  The way I fixed it is   Double clicked on myproject xcworkspace in ios directory  to open workspace with Xcode  Navigate into Product  gt  Scheme  gt  Manage Schemes    Created a Scheme appropriately with name myproject  this name is case-sensitive  Ran react-native run-ios in project directory

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In my case everything solved after re-cloning the repo and launching it again  Setup  Xcode 12 4 Mac M1

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Here is the a possible solution  The problem is found in RealmReact xcodeproj

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SOLVED  Always be sure to update your Xcode folks   Protip  And don t do it from the apple store  but always do it from an official apple website of course   tip from  http   ericasadun com 2016 03 22 xcode-upgrades-lessons-learned   official apple download page  https   developer apple com download more   For those who are unable to resolve with above method   Go to project settings in Xcode  Menu File- Project Settings Go to per-User Project Settings section  Click on advanced  Select Xcode Default option  previously this used to be Legacy for my project    I have analysed on similar lines and concluded that clean is causing the archive to fail  So  the new build system is not clearing the custom legacy build directory   delete the build  folder in ios  and rerun if that doesn t do any change then File - gt  Project Settings  or WorkSpace Settings  - gt  Build System - gt  Legacy Build System Rerun and voil      If it still Fails you need to clean full project  Do the following    Delete ios dir manually Clean cache Run npm cache clean --force Run react-native eject Re-install all packages npm install Run the link command react-native link Finally run react-native run-ios

User · Answer

What worked for me was to rename the project by removing the special characters   Example   project marketplace  to  projectmarketplace   In this case  I redid the project with react-native init and copied the src and package json folder

User · Answer

I had the same error  but it was caused by the package manager process port being already used  port 8081    To fix  I just ran the react-native by specifying a different port  see below   react-native run-ios --port 8090

User · Answer

After upgrading react-native  you may have stale dependencies  The steps below should fix it    cd ios delete Podfile lock pod deintegrate  amp  amp  pod install Navigate back to package json directory run react-native run-ios In Xcode you can build your project again too    Hope this helps  I did this after upgrading to react-native 0 61

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Should always start with the simplest first  after wasting hours and days on this error  And after an extensive amount of research  Simply RESTART YOUR MACHINE  This resolved this error  I m on react-native-cli  2 0 1 react-native  0 63 3

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This could also be due to having custom named schemes  in that case   cd ios xcodebuild -list  Find your s  it might have a -dev suffix  Then   cd     root of the app  npx react-native run-ios --scheme custom-scheme-name

User · Answer

If you don t have cocoa pods installed you need to sudo gem install cocoapods   run cd ios run pod install cd    delete build folder run react-native run-ios   if error persists   1  delete build folder again  2  open the  ios folder in x-code 3  navigate File -  Project Settings -  Build System -  change  Shared workspace settings and Per-User workspace settings   Build System -   Legacy Build System

User · Answer

delete the build  folder in ios  and rerun if that doesn t do any change then File -  Project Settings  or WorkSpace Settings  -  Build System -  Legacy Build System Rerun and voil       In case this doesn t work  don t be sad  there is another solution to deeply clean project   Delete ios  and android  folders  Run react-native eject Run react-native link react-native run-ios   This will bring a whole new resurrection for your project

[xcode] error Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65

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