Services are not starting

[prasadrao82]

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I have installed flogo using yarn install after downloading code from git. Server and client has started with yarn start server and yarn start client respectively , Created a sample flow , while executing the flow, received following error .

"error: [16:58:13.251] connect ECONNREFUSED 127.0.0.1:9090 {"stack":"RequestError: connect ECONNREFUSED 127.0.0.1:9090\n at ClientRequest. (C:\nsn\IoT\EdgeComputing\flogo-web\node_modules\got\source\request-as-event-emitter.js:178:14)\n at Object.onceWrapper (events.js:291:20)\n at ClientRequest.emit (events.js:208:15)\n at ClientRequest.origin.emit (C:\nsn\IoT\EdgeComputing\flogo-web\node_modules\@szmarczak\http-timer\source\index.js:37:11)\n at Socket.socketErrorListener (_http_client.js:399:9)\n at Socket.emit (events.js:203:13)\n at emitErrorNT (internal/streams/destroy.js:91:8)\n at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)\n at processTicksAndRejections (internal/process/task_queues.js:77:11)","name":"RequestError","code":"ECONNREFUSED","hostname":"localhost","method":"POST","path":"/v1/flows","protocol":"http:","url":"http://localhost:9090/v1/flows","gotOptions":{"path":"/v1/flows","protocol":"http:","hostname":"localhost","hash":"","search":"","pathname":"/v1/flows","href":"http://localhost:9090/v1/flows","port":9090,"retry":{"methods":{},"statusCodes":{},"errorCodes":{}},"headers":{"user-agent":"got/9.6.0 (https://github.com/sindresorhus/got)","accept":"application/json","accept-encoding":"gzip, deflate","content-type":"application/json","content-length":559},"hooks":{"beforeError":[],"init":[],"beforeRequest":[],"beforeRedirect":[],"beforeRetry":[],"afterResponse":[]},"decompress":true,"throwHttpErrors":true,"followRedirect":true,"stream":false,"form":false,"json":true,"cache":false,"useElectronNet":false,"baseUrl":"http://localhost:9090/v1/","body":"{\"name\":\"Test12\",\"description\":\"\",\"metadata\":{\"input\":[],\"output\":[]},\"tasks\":[{\"id\":\"rest_2\",\"name\":\"REST Invoke","description":"Invokes a REST Service","activity":{"ref":"github.com/project-flogo/contrib/activity/rest","settings":{"uri":"https://gorest.co.in/public/v1/posts\"}}},{\"id\":\"log_3\",\"name\":\"Log\",\"description\":\"Logs a message","activity":{"ref":"github.com/project-flogo/contrib/activity/log","input":{"message":"Data received from x ssystem $activity[rest_2].data","addDetails":false,"usePrint":false}}}],"links":[{"from":"rest_2","to":"log_3"}]}","method":"POST","forceRefresh":true}}
"

Please tell us about your environment (Operating system, docker version, browser & web ui version, etc):
windows 10
Flogo version (CLI & contrib/lib. If unknown, leave empty or state unknown): 0.X.X
Latest

Could you please guide me how to handle and where did i miss.