Selenium error

gistfile1.txt

15:47:14.121 INFO - OS: Linux 3.13.0-24-generic amd64
15:47:14.133 INFO - v2.9.0, with Core v2.9.0. Built from revision 14289
15:47:14.333 INFO - RemoteWebDriver instances should connect to: http://127.0.0.1:4444/wd/hub
15:47:14.336 INFO - Version Jetty/5.1.x
15:47:14.338 INFO - Started HttpContext[/selenium-server/driver,/selenium-server/driver]
15:47:14.339 INFO - Started HttpContext[/selenium-server,/selenium-server]
15:47:14.340 INFO - Started HttpContext[/,/]
15:47:14.367 INFO - Started org.openqa.jetty.jetty.servlet.ServletHandler@2e447a24
15:47:14.367 INFO - Started HttpContext[/wd,/wd]
15:47:14.372 INFO - Started SocketListener on 0.0.0.0:4444
15:47:14.375 INFO - Started org.openqa.jetty.jetty.Server@54697123
15:47:19.648 INFO - Checking Resource aliases
15:47:19.654 INFO - Command request: getNewBrowserSession[*firefox, http://192.168.33.120/] on session null
15:47:19.657 INFO - creating new remote session
15:47:19.680 INFO - Allocated session d861acf299fe443896a7692db5c84b63 for http://192.168.33.120/, launching...
15:47:19.826 INFO - Preparing Firefox profile...
15:47:39.936 ERROR - Failed to start new browser session, shutdown browser and clear all session data
java.lang.RuntimeException: Timed out waiting for profile to be created!
	at org.openqa.selenium.server.browserlaunchers.FirefoxChromeLauncher.waitForFullProfileToBeCreated(FirefoxChromeLauncher.java:364)
	at org.openqa.selenium.server.browserlaunchers.FirefoxChromeLauncher.populateCustomProfileDirectory(FirefoxChromeLauncher.java:120)
	at org.openqa.selenium.server.browserlaunchers.FirefoxChromeLauncher.launch(FirefoxChromeLauncher.java:90)
	at org.openqa.selenium.server.browserlaunchers.FirefoxChromeLauncher.launchRemoteSession(FirefoxChromeLauncher.java:416)
	at org.openqa.selenium.server.browserlaunchers.FirefoxLauncher.launchRemoteSession(FirefoxLauncher.java:118)
	at org.openqa.selenium.server.BrowserSessionFactory.createNewRemoteSession(BrowserSessionFactory.java:374)
	at org.openqa.selenium.server.BrowserSessionFactory.getNewBrowserSession(BrowserSessionFactory.java:125)
	at org.openqa.selenium.server.BrowserSessionFactory.getNewBrowserSession(BrowserSessionFactory.java:86)
	at org.openqa.selenium.server.SeleniumDriverResourceHandler.getNewBrowserSession(SeleniumDriverResourceHandler.java:809)
	at org.openqa.selenium.server.SeleniumDriverResourceHandler.doCommand(SeleniumDriverResourceHandler.java:435)
	at org.openqa.selenium.server.SeleniumDriverResourceHandler.handleCommandRequest(SeleniumDriverResourceHandler.java:405)
	at org.openqa.selenium.server.SeleniumDriverResourceHandler.handle(SeleniumDriverResourceHandler.java:149)
	at org.openqa.jetty.http.HttpContext.handle(HttpContext.java:1530)
	at org.openqa.jetty.http.HttpContext.handle(HttpContext.java:1482)
	at org.openqa.jetty.http.HttpServer.service(HttpServer.java:909)
	at org.openqa.jetty.http.HttpConnection.service(HttpConnection.java:820)
	at org.openqa.jetty.http.HttpConnection.handleNext(HttpConnection.java:986)
	at org.openqa.jetty.http.HttpConnection.handle(HttpConnection.java:837)
	at org.openqa.jetty.http.SocketListener.handleConnection(SocketListener.java:243)
	at org.openqa.jetty.util.ThreadedServer.handle(ThreadedServer.java:357)
	at org.openqa.jetty.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
15:47:39.945 INFO - Got result: Failed to start new browser session: Error while launching browser on session null