Cordova plugin add de.appplant.cordova.plugin.local-notification --save Running command - failed!

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

? Detected https_proxy in environment, but to proxy CLI requests, you’ll need @i
onic/cli-plugin-proxy installed. Install now? No

cordova plugin add de.appplant.cordova.plugin.local-notification --save
:heavy_multiplication_x: Running command - failed!
[ERROR] An error occurred while running cordova plugin add

    de.appplant.cordova.plugin.local-notification --save (exit code 1):
    
    Error: tunneling socket could not be established, cause=write EPROTO 
    140128869005184:error:140770FC:SSL 
    routines:SSL23_GET_SERVER_HELLO:unknown 
    protocol:../deps/openssl/openssl/ssl/s23_clnt.c:794: