Premise: I’m on a MAC and I don’t know if Windows is ok
React – Box project construction

localhost:ReactDapp liyuechun$ truffle unbox react-box

Starting unbox...
=================

✔ Preparing to download box
✖ Downloading
Unbox failed!
RequestError: Error: connect ECONNREFUSED 0.0.0.0:443
    at new RequestError (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/errors.js:14:1)
    at Request.plumbing.callback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/plumbing.js:87:1)
    at Request.RP$callback [as _callback] (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/plumbing.js:46:1)
    at self.callback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request/request.js:185:1)
    at Request.emit (events.js:189:13)
    at Request.onRequestError (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request/request.js:881:1)
    at ClientRequest.emit (events.js:189:13)
    at TLSSocket.socketErrorListener (_http_client.js:392:9)
    at TLSSocket.emit (events.js:189:13)
    at emitErrorNT (internal/streams/destroy.js:82:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:50:3)
    at process._tickCallback (internal/process/next_tick.js:63:19)
Truffle v5.1.29 (core: 5.1.29)
Node v10.15.3

The solution
Download demo, copy and unpack the hosts file in the folder, open the terminal, enter open /etc, paste the hosts into the etc folder, and replace the original 0 hosts1 file.

localhost:ReactDapp liyuechun$ truffle unbox react-box

Starting unbox...
=================

✔ Preparing to download box
✔ Downloading
✔ cleaning up temporary files
✔ Setting up box

Unbox successful, sweet!

Commands:

  Compile:              truffle compile
  Migrate:              truffle migrate
  Test contracts:       truffle test
  Test dapp:            cd client && npm test
  Run dev server:       cd client && npm run start
  Build for production: cd client && npm run build

Refer to the link