Fatal error: Class 'Illuminate\Foundation\Application' not found

This error message indicates that the Laravel framework is unable to find the Application class from the Illuminate\Foundation namespace.

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There are a few possible causes for this error:

  1. You may be missing the vendor directory in your Laravel project. The vendor directory contains all of the framework's dependencies, including the Illuminate namespace.

  2. There may be an issue with your Laravel installation. If you installed Laravel using Composer, you can try running the following command to repair your installation:

    composer install
  3. If the above solutions do not resolve the issue, it is possible that the Illuminate namespace is not being correctly autoloaded. You can check the autoload section of your composer.json file to make sure that the Illuminate namespace is being included in the autoloader.

I hope this helps! Let me know if you have any further questions.