Address package inclusion errors by following these steps to reset the project state and ensure a clean migration. 1. Close the Unity Editor and Unity Hub completely to release any file locks on your project. 2. Navigate to your project root directory and delete the Library folder. This folder contains intermediate files that are often incompatible after a migration. 3. Clear the global package cache to remove potentially corrupted artifacts. On Windows, navigate to %LocalAppdata%\Unity\cache\packages. On macOS, navigate to ~/Library/Unity/cache/packages. Delete the contents of these directories. 4. Open your project folder and inspect the Packages/manifest.json file. Ensure that package versions are not explicitly locked to versions that do not support your target Unity version. 5. Relaunch your project via the Unity Hub. The Unity Editor will re-download required packages and rebuild the Library folder. 6. Open the Package Manager and select Check for Updates to ensure all dependencies are fully compatible with your current version.

Additional Tips:

• Ensure your storage device has sufficient disk space for the expanded Library folder which can grow significantly during a migration.
• Temporarily exclude your project directory from active antivirus scanning to prevent file locking during the extraction of package tarballs.