Failed to download Chromium Set "PUPPETEER_SKIP_CHROMIUM_DOWNLOAD" env variable to skip download - polymer

Question

I am trying to install polymer-cli version 3 in my Windows and I am getting the error mentioned in this question. Searching around I reach that it is a problem with kind of PDF Generator from NPM dependencies. Sincerely, it doesn't make sense to me but I still try follow the recommendation mentioned in https://github.com/webpro/reveal-md/issues/191.
Bellow, the full error:
C:\dev\polymer2\sample>npm install -g polymer-cli#next --no-optional
C:\Users\my-user\AppData\Roaming\npm\polymer -> C:\Users\my-user\AppData\Roaming\npm\node_modules\polymer-cli\bin\poly
mer.js
> puppeteer#1.3.0 install C:\Users\my-user\AppData\Roaming\npm\node_modules\polymer-cli\node_modules\puppeteer
> node install.js
ERROR: Failed to download Chromium r549031! Set "PUPPETEER_SKIP_CHROMIUM_DOWNLOAD" env variable to skip download.
{ Error: getaddrinfo ENOTFOUND storage.googleapis.com storage.googleapis.com:443
at errnoException (dns.js:50:10)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:92:26)
code: 'ENOTFOUND',
errno: 'ENOTFOUND',
syscall: 'getaddrinfo',
hostname: 'storage.googleapis.com',
host: 'storage.googleapis.com',
port: 443 }
npm WARN rollback Rolling back debug#3.1.0 failed (this is probably harmless): EPERM: operation not permitted, scandir '
C:\Users\my-user\AppData\Roaming\npm\node_modules\polymer-cli\node_modules\puppeteer\node_modules\https-proxy-agent\nod
e_modules'
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents#1.2.3 (node_modules\polymer-cli\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents#1.2.3: wanted {"os":"darwin","arch":"any
"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: puppeteer#1.3.0 (node_modules\polymer-cli\node_modules\puppeteer):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: puppeteer#1.3.0 install: `node install.js`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1
+ polymer-cli#1.7.0-pre.17
updated 1 package in 15.762s
C:\dev\polymer2\sample>polymer --version
1.7.0-pre.17