Hey, check your version of Node. I’m guessing you’re running an unsupported version. Sage requires 0.12.x
If you’re running a newer version things will fail, 6 and above I’m pretty certain will make graceful-fs angry.
There’s an npm package called n that I’ve found super handy for this sort of thing. Let’s you switch between node versions simply by entering n in the terminal.
Once you’ve verified you’re running a supported version of node, if you are still having issues rebuild your node modules directory, rm -rf node_modules then npm install then you should be sorted.
Hoop that helps!