title: Spring web flow configuration with JSF getting Exception
body: <p>Spring web flow configuration with JSF getting Execption</p>
  
  <pre><code>        java.lang.NoSuchMethodError: org.springframework.core.env.ConfigurableEnvironment.merge(Lorg/springframework/core/env/ConfigurableEnvironment;)V
  org.springframework.context.support.AbstractApplicationContext.setParent(AbstractApplicationContext.java:392)
  org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:585)
  org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)
  org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)
  org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)
  org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)
  javax.servlet.GenericServlet.init(GenericServlet.java:212)
  org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
  org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
  org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
  org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
  org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
  org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
  java.lang.Thread.run(Thread.java:662)
  </code></pre>
  
  <p>when i have configure all things for flow but i am getting this exception.</p>