Less Plugin Clean CSS is broken

[powerriegel]

Whats wrong here?

user@en302:/$ npm -v
3.5.2
user@en302:/$ lessc -v
lessc 3.0.1 (Less Compiler) [JavaScript]
user@en302:/$ sudo npm install -g less-plugin-clean-css
/usr/local/lib
└── [email protected] 
user@en302:/$ lessc ~wlb.less --clean-css
Unable to load plugin clean-css please make sure that it is installed under or at the same level as less

Ubuntu 17.10.

[seven-phases-max]

See #24.

[seven-phases-max]

Closing in favour of #24.

[powerriegel]

sudo npm install -g less@2

solves the problem.