Sdk build cargo build error

Developers
1 
git clone https://github.com/dfinity/sdk.git

cargo build

// 
  --- stdout
  cargo:rerun-if-env-changed=DFX_ASSETS
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/nix/sources.json
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/scripts/dfx-asset-sources.sh
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/scripts/prepare-dfx-assets.sh
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/src/distributed/assetstorage.did
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/src/distributed/assetstorage.wasm
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/src/distributed/ui.did
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/src/distributed/ui.wasm
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/src/distributed/wallet.did
  cargo:rerun-if-changed=/Users/name/Documents/dfinity/sdk/src/distributed/wallet.wasm
  cargo:error=unable to run /Users/name/Documents/dfinity/sdk/scripts/prepare-dfx-assets.sh:
  cargo:error=curl: (3) URL using bad/illegal format or missing URL