centos7安装yapi报错, 报错原因来自nodejs

Question

(node:17561) UnhandledPromiseRejectionWarning: Error: Request failed with status code 502
at createError (/usr/local/app/nodejs/node/lib/node_modules/yapi-cli/node_modules/axios/lib/core/createError.js:16:15)
at settle (/usr/local/app/nodejs/node/lib/node_modules/yapi-cli/node_modules/axios/lib/core/settle.js:18:12)
at IncomingMessage.handleStreamEnd (/usr/local/app/nodejs/node/lib/node_modules/yapi-cli/node_modules/axios/lib/adapters/http.js:191:11)
at emitNone (events.js:111:20)
at IncomingMessage.emit (events.js:208:7)
at endReadableNT (_stream_readable.js:1064:12)
at _combinedTickCallback (internal/process/next_tick.js:139:11)
at process._tickCallback (internal/process/next_tick.js:181:9)
(node:17561) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)