Adding package failure due to invalid SSL certificate

[oheil]

For this we Sijun already found a solution:

Problem with curl.exe (Windows) and package installation

create a file called “_curlrc” that contains “insecure” (wihout quote) and place it in your %APPDATA% (echo %APPDATA%). For windows, curlrc file should begin with underscore. https://curl.haxx.se/docs/manual.html

Important: do this fix only temporary!