Since last upgrade my Insync is not working anymore.
After fresh reinstall and deleting ./config/Insync folder , I am not able to login .
So I’ve used the manual authen in the menu login issue to copy and past the Auth Code.
And I have a popup error message 
Unexpected error AttributeError:‘NoneType’ object has no attribute ‘upper’
for your information, this issue is linked to environment variable http_proxy.
Removed it and it’s fixed for me
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