Problem installing cordova plugin geolocation (rxjs version)

Hi there,
I meet a problem when I want to install the geolocation cordova plugin, it doesn’t work 'cause of “UNMET PEER DEPENDECY”…
I don’t really understand what to do, change my version ? how ? I tried to go in rxjs@5.0.0-beta.12 after it says the same WARN with rxjs@5.0.1 so I tried this version and it says again rxjs@5.0.0-beta.12

How can I install rxjs@5.0.0-beta.12 & rxjs@5.0.1 ? It says empty…

See screenshot below :

sudo npm install rxjs@5.0.1

sudo npm install @ionic-native/core --save

sudo npm install @ionic-native/geolocation --save

sudo ionic plugin add corodva-plugin-geolocation

Thanks in advance for your time & future replies

Anyway, it doesn’t really matter, it will normally work, sorry for inconvenience :neutral_face: