Melati Error

Reported from ConfigServlet

An error has occured in the application that runs this website, please contact nobody , with the information given below.

org.melati.poem.DatabaseInitialisationPoemException: Something went wrong trying to open the logical database `concentus7' 
org.melati.poem.dbms.ConnectionFailurePoemException: Initialising
org.melati.poem.dbms.ConnectionFailurePoemException
org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
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org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
	at org.postgresql.jdbc1.AbstractJdbc1Connection.openConnection(AbstractJdbc1Connection.java:204)
	at org.postgresql.Driver.connect(Driver.java:139)
	at org.melati.poem.dbms.AnsiStandard.getConnection(AnsiStandard.java:206)
	at org.melati.poem.Database.connect(Database.java:237)
	at com.concentus7.Concentus7Database.connect(Concentus7Database.java:26)
	at org.melati.poem.PoemDatabaseFactory.getDatabase(PoemDatabaseFactory.java:202)
	at org.melati.LogicalDatabase.getDatabase(LogicalDatabase.java:142)
	at org.melati.Melati.setPoemContext(Melati.java:230)
	at org.melati.servlet.ConfigServlet.doGetPostRequest(ConfigServlet.java:176)
	at org.melati.servlet.ConfigServlet.doGet(ConfigServlet.java:148)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)