Cannot install Local Notifications

Hi, I’m using Ionic 2x ( and above ) and I have a problem installing Local Notifications.
This is the command I run for installing it :

ionic cordova plugin add de.appplant.cordova.plugin.local-notification

This is the error I get while installing it:

cordova plugin add de.appplant.cordova.plugin.local-notification --save
Installing "de.appplant.cordova.plugin.local-notification" for android

Plugin dependency "cordova-plugin-device@1.1.7" already fetched, using that version.

Dependent plugin "cordova-plugin-device" already installed on android.

Failed to install 'de.appplant.cordova.plugin.local-notification': CordovaError: Failed to fetch plugin cordova-plugin-app-event via registry.
Probably this is either a connection problem, or plugin spec is incorrect.
Check your connection and plugin name/version/URL.
Error: npm: Command failed with exit code 1 Error output:
npm ERR! code ENOLOCAL
npm ERR! Could not install from "node_modules/cordova-plugin-app-event" as it does not contain a package.json file.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/xxx/.npm/_logs/2017-11-24T11_55_27_043Z-debug.log
    at /usr/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/fetch.js:205:33
    at _rejected (/usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:864:24)
    at /usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:890:30
    at Promise.when (/usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:1142:31)
    at Promise.promise.promiseDispatch (/usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:808:41)
    at /usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:624:44
    at runSingle (/usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:137:13)
    at flush (/usr/lib/node_modules/cordova/node_modules/cordova-fetch/node_modules/q/q.js:125:13)
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9)

Error: Failed to fetch plugin cordova-plugin-app-event via registry.
Probably this is either a connection problem, or plugin spec is incorrect.
Check your connection and plugin name/version/URL.
Error: npm: Command failed with exit code 1 Error output:
npm ERR! code ENOLOCAL
npm ERR! Could not install from "node_modules/cordova-plugin-app-event" as it does not contain a package.json file.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/xxx/.npm/_logs/2017-11-24T11_55_27_043Z-debug.log

[ERROR] An error occurred while running cordova plugin add de.appplant.cordova.plugin.local-notification --save (exit 
        code 1).

If you can help me fix this, it would be great.

try ionic cordova plugin add https://github.com/katzer/cordova-plugin-local-notifications