Issue Selenium hub with appium ,server response code : 500

[MuthuSelvan]

Kindly look my below and help for solving the issue .

ERROR - A new session could not be created for android appium

Hi All , Getting the below error when i am running selenium based grid in appium , ERROR log4j:WARN No appenders could be found for logger (org.apache.http.client.protocol.RequestAddCookies). log4j:WARN Please initialize the log4j system properly. Exception in thread “main” org.openqa.selenium.SessionNotCreatedException: A new session could not be created. (Original error: Requested a new session but one was in progress) (WARNING: The server did not provide any stacktrace information) Comm…