Understanding “Command phasescriptexecution failed with a nonzero exit code”

When working with Xcode or other development environments, you may encounter various error messages that can be frustrating and time-consuming to resolve. One such error message is “Command phasescriptexecution failed with a nonzero exit code.” This error message often appears during the build process and can prevent your project from successfully compiling or running. In this article, we will explore the causes of this error, discuss potential solutions, and provide valuable insights to help you overcome this issue.

What does “Command phasescriptexecution failed with a nonzero exit code” mean?

The error message “Command phasescriptexecution failed with a nonzero exit code” indicates that a script executed during the build process returned a non-zero exit code. In simpler terms, a script that is supposed to perform a specific task during the build process encountered an error and failed to complete successfully. This error can occur for various reasons, including syntax errors in the script, missing dependencies, or conflicts with other build settings.

Common causes of “Command phasescriptexecution failed with a nonzero exit code”

Understanding the common causes of this error message is crucial for effectively troubleshooting and resolving the issue. Here are some of the most common causes:

  • Syntax errors in the script: One of the most common causes of this error is a syntax error in the script being executed. A missing semicolon, a misplaced bracket, or a typo can all lead to a non-zero exit code.
  • Missing dependencies: If the script relies on external dependencies that are not properly installed or configured, it can result in a non-zero exit code. Ensure that all required dependencies are correctly set up and accessible.
  • Conflicts with other build settings: In some cases, conflicts between different build settings or configurations can cause the script to fail with a non-zero exit code. Review your build settings and make sure there are no conflicting configurations.
  • Outdated or incompatible scripts: If the script you are using is outdated or incompatible with the current version of Xcode or your development environment, it may fail with a non-zero exit code. Check for updates or consider using an alternative script.

Resolving “Command phasescriptexecution failed with a nonzero exit code”

Now that we have identified some common causes of this error, let’s explore potential solutions to resolve it:

1. Review the script for syntax errors

Start by carefully reviewing the script that is failing with a non-zero exit code. Look for any syntax errors, missing semicolons, or typos that could be causing the issue. Even a small mistake can lead to a script failure. Consider using a code editor with syntax highlighting and linting capabilities to help identify and fix any syntax errors.

2. Check for missing dependencies

If the script relies on external dependencies, ensure that they are properly installed and configured. Check the documentation for the script or any associated libraries to verify the required dependencies and their versions. Make sure that the dependencies are accessible and correctly set up in your development environment.

3. Resolve conflicts with other build settings

If you suspect that conflicts with other build settings are causing the error, review your project’s build settings and configurations. Look for any conflicting settings or configurations that could interfere with the script execution. Consider disabling or adjusting conflicting settings to see if it resolves the issue.

4. Update or replace outdated scripts

If the script you are using is outdated or incompatible with your current development environment, consider updating it or finding an alternative. Check for any available updates or newer versions of the script that address compatibility issues. Alternatively, look for alternative scripts or solutions that achieve the same task without encountering the non-zero exit code error.

Case Study: Resolving “Command phasescriptexecution failed with a nonzero exit code”

Let’s consider a case study to illustrate how these solutions can be applied in practice. Suppose you are working on an iOS project and encounter the “Command phasescriptexecution failed with a nonzero exit code” error during the build process. After reviewing the script, you notice a missing semicolon at the end of a line. By fixing this syntax error, you successfully resolve the error and the project builds without any issues.


The “Command phasescriptexecution failed with a nonzero exit code” error can be frustrating, but understanding its causes and implementing the appropriate solutions can help you overcome it. Remember to review the script for syntax errors, check for missing dependencies, resolve conflicts with other build settings, and update or replace outdated scripts. By following these steps, you can effectively troubleshoot and resolve this error, ensuring a smooth build process for your projects.


1. Can I ignore the “Command phasescriptexecution failed with a nonzero exit code” error?

While it may be tempting to ignore this error and proceed with the build process, it is generally not recommended. The error indicates that a script failed to execute successfully, which can lead to unexpected behavior or issues in your project. It is best to address the error and resolve it to ensure the stability and reliability of your project.

2. How can I identify the specific script causing the error?

To identify the specific script causing the error, you can look for the error message or stack trace provided in the build logs. The error message usually includes the name or path of the script that failed. By examining the logs, you can pinpoint the exact script and focus your troubleshooting efforts on that specific script.

3. Are there any tools or plugins available to help with troubleshooting this error?

Yes, there are several tools and plugins available that can assist with troubleshooting this error. For example, Xcode provides a built-in debugger that can help identify issues in your scripts. Additionally, there are third-party plugins and linters available that can help detect and fix syntax errors in your scripts. Explore the available tools and plugins that are compatible with your development environment to streamline the troubleshooting process.

4. What should I do if none of the suggested solutions resolve the error?

If none of the suggested solutions resolve the “Command phasescriptexecution failed with a nonzero exit code” error, it may be necessary to seek further assistance. Consider reaching out to the developer community, posting on relevant forums or discussion boards, or consulting with experienced developers who may have encountered similar issues. Providing detailed information about your project, the specific error message, and the steps you have already taken can help others provide targeted guidance.

5. How can I prevent this error from occurring in future projects?

To prevent this error from occurring in future projects, it is essential to follow best practices when writing and integrating scripts into your

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