title: While starting the play server config locations must not be null exception?
body: <p>While starting the play server, we are getting the exception "config locations must not be null", Can anyone let me know what's going wrong?</p>
  
  <p><strong>Exception</strong></p>
  
  <pre><code>  Starting gpp-web at port 9000...                                      ERROR
  java.lang.IllegalArgumentException: Config locations must not be null
          at org.springframework.util.Assert.noNullElements(Assert.java:241)
          at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.setConfigLocations(AbstractRefreshableConfigApplicationContext.java:77)
          at org.springframework.context.support.ClassPathXmlApplicationContext.&lt;init&gt;(ClassPathXmlApplicationContext.java:137)
          at org.springframework.context.support.ClassPathXmlApplicationContext.&lt;init&gt;(ClassPathXmlApplicationContext.java:83)
          at Global.onStart(Global.java:15)
          at play.core.j.JavaGlobalSettingsAdapter.onStart(JavaGlobalSettingsAdapter.scala:18)
          at play.api.GlobalPlugin.onStart(GlobalSettings.scala:203)
          at play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:88)
          at play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:88)
          at scala.collection.immutable.List.foreach(List.scala:318)
          at play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:88)
          at play.api.Play$$anonfun$start$1.apply(Play.scala:88)
          at play.api.Play$$anonfun$start$1.apply(Play.scala:88)
          at play.utils.Threads$.withContextClassLoader(Threads.scala:18)
          at play.api.Play$.start(Play.scala:87)
          at play.core.StaticApplication.&lt;init&gt;(ApplicationProvider.scala:52)
          at play.core.server.NettyServer$.createServer(NettyServer.scala:243)
          at play.core.server.NettyServer$$anonfun$main$3.apply(NettyServer.scala:279)
          at play.core.server.NettyServer$$anonfun$main$3.apply(NettyServer.scala:274)
          at scala.Option.map(Option.scala:145)
          at play.core.server.NettyServer$.main(NettyServer.scala:274)
          at play.core.server.NettyServer.main(NettyServer.scala)
  </code></pre>