Failed to start an Appium session

bindu · October 13, 2015, 12:24pm

I am trying to start a appium session but getting following error
Error: Requested a new session but one was in progress

2015-10-13 12:10:12:309 - error: Failed to start an Appium session, err was: Error: Requested a new session but one was in progress
2015-10-13 12:10:12:331 - info: [debug] Error: Requested a new session but one was in progress
at [object Object].Appium.start (C:\Program Files (x86)\Appium\node_modules\appium\lib\appium.js:139:15)
at exports.createSession (C:\Program Files (x86)\Appium\node_modules\appium\lib\server\controller.js:188:16)
at Layer.handle [as handle_request] (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\layer.js:82:5)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:110:13)
at Route.dispatch (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:91:3)
at Layer.handle [as handle_request] (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\layer.js:82:5)
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:267:22
at Function.proto.process_params (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:321:12)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:261:10)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:100:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at C:\Program Files (x86)\Appium\node_modules\appium\lib\server\controller.js:39:7
at Layer.handle [as handle_request] (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\layer.js:82:5)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:110:13)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:104:14)
at Route.dispatch (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\route.js:91:3)
at Layer.handle [as handle_request] (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\layer.js:82:5)
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:267:22
at Function.proto.process_params (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:321:12)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:261:10)
at methodOverride (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\method-override\index.js:79:5)
at Layer.handle [as handle_request] (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\layer.js:82:5)
at trim_prefix (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:302:13)
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:270:7
at Function.proto.process_params (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:321:12)
at next (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:261:10)
at logger (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\morgan\index.js:136:5)
at Layer.handle [as handle_request] (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\layer.js:82:5)
at trim_prefix (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\express\lib\router\index.js:302:13)
2015-10-13 12:10:12:332 - info: [debug] Responding to client with error: {“status”:33,“value”:{“message”:“A new session could not be created. (Original error: Requested a new session but one was in progress)”,“origValue”:“Requested a new session but one was in progress”},“sessionId”:“1e789f89-8e9c-446d-a9ee-211d49340cf4”}
2015-10-13 12:10:12:335 - info: <-- POST /wd/hub/session 500 28.980 ms - 250

Sruthi · October 14, 2015, 11:13pm

are you calling driver.quit()? on your script. or

you can kill the session manually.

Go to Terminal and run $ lsof -i -n -P
you should see the following details

node (process id)TCP 127.0.0.1:4723->127.0.0.1:XXXXX (ESTABLISHED)
node (process id) TCP 127.0.0.1:4723->127.0.0.1:XXXXX (ESTABLISHED)
Kill the job using kill (process id)

now start the appium again. it should work.