RPI2 + Jessy instalation error

Issues and Errors
1

Dear Experts,
I’m not an expert but I like the idea of RPI and blynk together this is why I tried to install blynk libraries on my RPI with clean and fresh Jessy image following instructions provided in doc section but I got following error when executing step:
sudo npm install -g onoff

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Any advice?

2

It’s not Blynk error.
Looks like the issue is with onoff library installer.