Command phasescriptexecution failed with a nonzero exit code

While building your Xcode project, have you ever encountered the frustrating error message “command phasescriptexecution failed with a nonzero exit code”? If so, you’re not alone. This common error can cause headaches for developers trying to get their apps up and running. But fear not, because, in this article, we will dig into what causes this error and provide solutions to fix it. 

Potential causes forcommand phasescriptexecution failed with a nonzero exit code. 

The error message “Command PhaseScriptExecution failed with a nonzero exit code” is a common error in Xcode and indicates an issue running a script during the build process. There are a few potential causes for this error message, including:

The “command phasescriptexecution failed with a nonzero exit code” various factors can cause the error, and pinpointing the exact cause can be challenging. One common reason for this error is issued with the shell script executed during the build phase.

Another possible cause of this error is a problem with your Xcode project settings. For example, if you need to properly configure your project’s build settings or include all necessary frameworks and libraries, it could result in this error message.

In some cases, third-party dependencies may also trigger this error. Suppose any of these dependencies do not support the version of Xcode you’re using or conflict with other libraries used in your project. In that case, they can lead to problems during compilation resulting in an exit code failure.

Furthermore, outdated macOS versions or software tools such as Xcode may contribute to command phasescriptexecution errors. Fixing these issues requires updating to newer versions compatible with each other.

Several reasons might trigger “command phasescriptexecution failed with a nonzero exit code,” so debugging becomes essential to resolve them effectively.

How to troubleshoot this error message 

To troubleshoot this error message, you can try the following steps:

  • Clean the project: Try cleaning and rebuilding it to see if this resolves the issue.
  • Disable the script: Temporarily disable the script to see if the error message disappears. You can further investigate the script and fix any issues if it does.
  • Check for dependencies: Verify that any external dependencies the script relies on are properly installed and accessible by the script.
  • Check the script file: Ensure that the script file has the proper permissions to be executed during the build process.
  • Upgrade Xcode: If you are using an older version of Xcode, upgrade to the latest version and see if the issue is resolved.

If none of these steps resolves the issue, you may need further assistance from a developer or the Xcode support team.

About phase script

A phase script is a custom script that can be run at specific phases of the build process in Xcode. These scripts are written in bash or another scripting language. They can perform various tasks, such as modifying build settings, copying files, or running tests.

There are two types of phase scripts: pre-actions and post-actions. Pre-action scripts are executed before a particular phase of the build process starts. In contrast, post-action scripts run after the phase has been completed.

Phase scripts offer developers a powerful tool to automate repetitive tasks during development and testing. They also allow more flexibility in managing complex projects with multiple targets and dependencies.

However, it’s important to note that improperly configured or poorly written phase scripts can cause errors during the build process that may lead to a “command phasescriptexecution failed with a nonzero exit code” error message. So it’s crucial to understand how these scripts work and what might cause them to fail.


The command phasescriptexecution failed with a nonzero exit code error can be frustrating and time-consuming. However, by following the steps outlined in this article, you should understand what causes the error and how to fix it.

Always check your project settings and ensure that any external dependencies are properly installed before running your build script. Additionally, watch for any syntax errors or typos in your script file.

By taking these precautions and troubleshooting steps into consideration, you’ll be well on your way to resolving this issue quickly so that you can get back to working on your project without interruption.

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