I have installed elastic search and its plugin head but when i enter the 

```
 **url 
"localhost:9200/_plugin/head/"**

```

It does not shows any thing?

And I have also install marvel/SENSE for monitoring purpose.
I have installed plugin/head using 

```
sudo elasticsearch/bin/plugin -install mobz/elasticsearch-head

```

But its also not working .
Error: console not found on url
<http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/sense_widget.html?snippets/010_Intro/10_Info.json>

BTW I am new to elastic search.
So if you could tell me why it is not showing anything or have i made any mistake.

Thank in advance!