当我运行composer-rest-composer命令时，一切都在构建，但是当我打开浏览器时，出现以下错误。
{“错误”：{“状态代码”：404，“名称”：“错误”，“消息”：“无法获取 / explorer /“，”状态“：404，”堆栈“：”错误：无法在以下位置获取/ explorer / \ n raiseUrlNotFoundError （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/loopback/server/middleware/url-not-found.js:21:17)\n 在Layer.handle [作为handle_request] （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/layer.js:95:5)\n 在trim_prefix （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:317:13)\n 在 /home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:284:7\n 在Function.process_params （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:335:12)\n 在下一个 （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:275:10)\n 在 /home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:635:15\n 在下一个 （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:260:14)\n 在Function.handle （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:174:3)\n 在路由器 （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:47:12)\n 在Layer.handle [作为handle_request] （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/layer.js:95:5)\n 在trim_prefix （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:317:13)\n 在 /home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:284:7\n 在Function.process_params （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:335:12)\n 在下一个 （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/express/lib/router/index.js:275:10)\n 在urlencodedParser （/home/santosh/.nvm/versions/node/v8.12.0/lib/node_modules/composer-rest-server/node_modules/body-parser/lib/types/urlencoded.js:91:7)"}}