heroku command not working error Installing core plugins -

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i'm keep getting error. have installed heroku toolkit

c:\users\hp-u>heroku login submit heroku cli usage information better improve cli user experience?
[y/n] y
heroku-cli: installing core plugins...error reading plugin heroku-apps. reinstalling... error reading plugin heroku-apps. reinstalling ... error reading plugin heroku-apps. reinstalling

i removed s https:// in value https_proxy variable , worked.

so:

export https_proxy="http://myproxy.com:8080" //instead of export https_proxy="https://myproxy.com:8080"

i.e. somehow internal college proxy might not able perform ssl communication


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