sh: 1: cross-env: Permission denied on laravel mix

Stefan Izdrail

Founder & Senior Architect · 2026-06-29

Laravel Company
Title: Tackling "sh: 1: cross-env: Permission denied" Error in Laravel Mix Development Environment Body:

If you've ever encountered the error "sh: 1: cross-env: Permission denied" when attempting to run npm run dev with Laravel Mix, you might be confused and frustrated. This issue can occur for a variety of reasons, from package conflicts to misconfigured permissions settings. In this comprehensive guide, we'll dive deep into the problem and offer helpful solutions that will ensure your Laravel Mix development environment operates smoothly.

Checking Package Conflicts

One possible reason for the error could be a conflict between packages with the same name or performing overlapping functions. This can lead to confusion in the Node Package Manager (NPM) and cause unexpected issues. To resolve this, run npm ls cross-env and check for any conflicting packages listed under 'dependencies' or 'optionalDependencies'. If you find any, try removing them with npm uninstall package_name. Then, reinstall the package using its correct version or a more compatible alternative.

Ensuring Correct Node and NPM Versions

The error could also be caused by incompatibility between your current Node and NPM versions. Sometimes, outdated versions can cause errors due to deprecation or changes in the underlying functionality. Ensure that you are running the latest stable versions of both Node.js (as per the project's requirements) and npm. If possible, it is also advisable to use the same version of Node across all your development environments for consistency.

Checking Permission Settings

Cross-env is a utility that allows you to run commands in different environments while preserving environment variables. To ensure proper functioning, cross-env requires specific permissions. If the error persists despite fixing potential conflicts or updating versions, try granting full read/write access to the specified folders and files by running sudo chmod -R 777 folder_name. However, it is usually not recommended to grant unrestricted access for security reasons.

Enabling Synchronous Mode in cross-env

Sometimes, the error might be caused by asynchronous mode enabled in your cross-env command. To ensure synchronous mode is activated, run export CROSS_ENV_SYNC=1 before executing your Node script. This will force cross-env to operate in strict synchronous mode, preventing errors.

Updating Node Modules and Package.json

If none of the above solutions work, try updating the dependencies listed in your project's package.json file. Check for any deprecated or conflicting dependencies and remove them. Finally, update the package versions to their latest stable releases using npm outdated, followed by npm install --save --only=upgraded. This ensures that your project is running on the most recent versions of all its dependencies.

Conclusion and Further Resources

In conclusion, encountering "sh: 1: cross-env: Permission denied" error in Laravel Mix development can be frustrating. However, with a deeper understanding of the issue and various troubleshooting techniques, you'll be better prepared to tackle any similar problems that may arise. For more information on Laravel Mix or to learn about other popular web frameworks, visit https://laravelcompany.com/blog/. Join our community of expert developers, designers, and content creators for a wealth of knowledge and resources.