java.lang.Exception: The database command refreshDatabaseList failed with the following exception:
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$DatabaseCommand.run(MySQLDatabaseServer.java:970)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$DatabaseCommand.postCommand(MySQLDatabaseServer.java:922)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer.refreshDatabaseList(MySQLDatabaseServer.java:376)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$.execute(MySQLDatabaseServer.java:526)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$DatabaseCommand.run(MySQLDatabaseServer.java:954)
        at org.netbeans.modules.db.mysql.impl.ConnectionProcessor.run(ConnectionProcessor.java:111)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)
java.lang.NullPointerException
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$.execute(MySQLDatabaseServer.java:395)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$DatabaseCommand.run(MySQLDatabaseServer.java:954)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$DatabaseCommand.postCommand(MySQLDatabaseServer.java:922)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer.refreshDatabaseList(MySQLDatabaseServer.java:376)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$.execute(MySQLDatabaseServer.java:526)
        at org.netbeans.modules.db.mysql.impl.MySQLDatabaseServer$DatabaseCommand.run(MySQLDatabaseServer.java:954)
        at org.netbeans.modules.db.mysql.impl.ConnectionProcessor.run(ConnectionProcessor.java:111)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)