https://www.tronic247.com/material/,Tronic247 Material,https://github.com/sachin1092/awesome-material#readme,Material Design error: <HTTPError 503: 'Service Temporarily Unavailable'> | reason: Service Temporarily Unavailable
http://www.materialup.com/,MaterialUp,https://github.com/sachin1092/awesome-material#readme,Material Design error: timeout('The read operation timed out') | reason: 
https://elements.polymer-project.org/browse?package=paper-elements,Paper Polymer Elements,https://github.com/sachin1092/awesome-material#readme,Material Design error: URLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1123)')) | reason: EOF occurred in violation of protocol (_ssl.c:1123)