No alive nodes found in your cluster - ElasticSearch

i'm using this package on laravel 5.1

but i see this error alltimes:

NoNodesAvailableException in

C:xampp...vendorelasticsearchelasticsearchsrcElasticsearchConnectionPoolStaticNoPingConnectionPool.php line 51:

No alive nodes found in your cluster

'hosts' => ['127.0.0.1:9200']

can you help me?

i'm newbie in elasticsearch