Activating Sage 10. chmod(): Operation not permitted

Based on this, and that you’re using WSL, my guess would be that your files are on the Windows file system (rather than the WSL file system) and this is preventing some file system operation from working correctly. Windows and Linux have fundamentally different approaches to file access management and while WSL tries to manage some of that it doesn’t always pan out. I’d recommend putting your project files on the WSL file system and seeing if that helps.

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