title: Problem of connection apache directory studio
body: <p>I have install apache directory studio but the server dosen't open and I had this error when I create a new connection.</p>
  <pre><code>Une erreur est survenue lors de l''ouverture de la connexion
   -  ERR_04110_CANNOT_CONNECT_TO_SERVER Cannot connect to the server: Connection refused: no further information
  org.apache.directory.studio.connection.core.io.StudioLdapException:  ERR_04110_CANNOT_CONNECT_TO_SERVER Cannot connect to the server: Connection refused: no further information
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper.toStudioLdapException(DirectoryApiConnectionWrapper.java:1350)
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper.access$2(DirectoryApiConnectionWrapper.java:1342)
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper$1.run(DirectoryApiConnectionWrapper.java:258)
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper.runAndMonitor(DirectoryApiConnectionWrapper.java:1261)
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper.doConnect(DirectoryApiConnectionWrapper.java:280)
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper.connect(DirectoryApiConnectionWrapper.java:144)
      at org.apache.directory.studio.connection.core.jobs.OpenConnectionsRunnable.run(OpenConnectionsRunnable.java:111)
      at org.apache.directory.studio.connection.core.jobs.StudioConnectionJob.run(StudioConnectionJob.java:109)
      at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
  Caused by: org.apache.directory.ldap.client.api.exception.InvalidConnectionException: ERR_04110_CANNOT_CONNECT_TO_SERVER Cannot connect to the server: Connection refused: no further information
      at org.apache.directory.ldap.client.api.LdapNetworkConnection.close(LdapNetworkConnection.java:781)
      at org.apache.directory.ldap.client.api.LdapNetworkConnection.connect(LdapNetworkConnection.java:978)
      at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper$1.run(DirectoryApiConnectionWrapper.java:227)
      ... 6 more
  Caused by: java.net.ConnectException: Connection refused: no further information
      at java.base/sun.nio.ch.Net.pollConnect(Native Method)
      at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:669)
      at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:944)
      at org.apache.mina.transport.socket.nio.NioSocketConnector.finishConnect(NioSocketConnector.java:223)
      at org.apache.mina.transport.socket.nio.NioSocketConnector.finishConnect(NioSocketConnector.java:47)
      at org.apache.mina.core.polling.AbstractPollingIoConnector$Connector.processConnections(AbstractPollingIoConnector.java:571)
      at org.apache.mina.core.polling.AbstractPollingIoConnector$Connector.run(AbstractPollingIoConnector.java:456)
      
  </code></pre>