Can't install plugin

[simplegr]

I can't install the plugin, can you please help?

cd /usr/share/elasticsearch && sudo bin/plugin --install skroutz/elasticsearch-skroutz-greekstemmer/2.4.4.1
-> Installing skroutz/elasticsearch-skroutz-greekstemmer/2.4.4.1...
Trying http://download.elasticsearch.org/skroutz/elasticsearch-skroutz-greekstemmer/elasticsearch-skroutz-greekstemmer-2.4.4.1.zip...
Trying http://search.maven.org/remotecontent?filepath=skroutz/elasticsearch-skroutz-greekstemmer/2.4.4.1/elasticsearch-skroutz-greekstemmer-2.4.4.1.zip...
Trying https://oss.sonatype.org/service/local/repositories/releases/content/skroutz/elasticsearch-skroutz-greekstemmer/2.4.4.1/elasticsearch-skroutz-greekstemmer-2.4.4.1.zip...
Trying https://github.com/skroutz/elasticsearch-skroutz-greekstemmer/archive/2.4.4.1.zip...
Trying https://github.com/skroutz/elasticsearch-skroutz-greekstemmer/archive/master.zip...
Failed to install skroutz/elasticsearch-skroutz-greekstemmer/2.4.4.1, reason: failed to download out of all possible locations..., use --verbose to get detailed information

[petsoukos]

Try

cd /usr/share/elasticsearch && sudo bin/plugin --install skroutz/elasticsearch-skroutz-greekstemmer/v2.4.4.1 

notice the v before the version numbers