I am using Mac with Sierra OS (10.12.5). I Installed Vapor using home-brew. If I tried to run command 'vapor build' in terminal it shows following error.
No .build folder, fetch may take a while...
Fetching Dependencies [ • ]
Error: backgroundExecute(code: 1, error: "swift-package: error: unknown command: --enable-prefetching\n", output: "")
Please help me.