No handler found for uri [/_auth/account] and method [PUT]

[jc4jc3jc0jc1]

After I place the file elasticsearch-auth-master inside of elasticsearch/bin/plugins, the above error showed up when I input curl -XPUT 'localhost:9200/_auth/account' -d "{
"authenticator" : "index",
"username" : "testuser",
"password" : "test123",
"roles" : ["user", "admin"]
}"
I would like to know why

[marevol]

Could you check Elasticsearch's log file?
I think that the plugin installation was failed...