在安装head和kopf这两个插件时候是不是解压就可以使用了？可是我在访问的时候400

Running with built in server

git clone git://github.com/mobz/elasticsearch-head.git

cd elasticsearch-head

npm install

npm run start

open http://localhost:9100/

git clone git://github.com/lmenezes/elasticsearch-kopf.git

cd elasticsearch-kopf

git checkout {branch|version}

npm install

grunt server