Directory does not exist

[2015-09-28 17:27:10,109][DEBUG][plugins ] [test-02-data02] [/usr/share/elasticsearch/plugins/mapper-attachments/_site] directory does not exist.
[2015-09-28 17:27:10,109][DEBUG][plugins ] [test-02-data02] [/usr/share/elasticsearch/plugins/watcher/_site] directory does not exist.
[2015-09-28 17:27:10,109][DEBUG][plugins ] [test-02-data02] [/usr/share/elasticsearch/plugins/cloud-aws/_site] directory does not exist.
[2015-09-28 17:27:10,109][DEBUG][plugins ] [test-02-data02] [/usr/share/elasticsearch/plugins/license/_site] directory does not exist.

Any idea what can cause the below issue?

What's the output from a request to _cat/plugins show?