报错了 about ar-lab

[shadowcz007]

(node:2849) UnhandledPromiseRejectionWarning: FetchError: request to http://0.0.0.0:8891/segment failed, reason: connect ECONNREFUSED 0.0.0.0:8891
at ClientRequest. (/Users/xgf/code/AR-lab/client/node_modules/node-fetch/lib/index.js:1461:11)
at ClientRequest.emit (events.js:315:20)
at Socket.socketErrorListener (_http_client.js:469:9)
at Socket.emit (events.js:315:20)
at emitErrorNT (internal/streams/destroy.js:106:8)
at emitErrorCloseNT (internal/streams/destroy.js:74:3)
at processTicksAndRejections (internal/process/task_queues.js:80:21)
(node:2849) 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(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 3)

service里的python服务需要开启

[nnocase]

OK，thanks