Login fails with ECONNRESET error

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#### Environment info
* OS: Win10
* App Version (`Command/Ctrl + ,`):

#### Description of the problem / feature request / question:
I'm unable to log in on my work laptop both use or not use proxy; it just sits at the login progress bar.

#### If possible, provide a sample gist or screenshot:

#### If possible, provide the log files
2019-04-19T08:45:26.193Z - info:

----- Lepton v1.7.3 win32-----

2019-04-19T08:45:26.195Z - info: [conf] Looking for .leptonrc at C:\Users\anjiuzhen/.leptonrc
2019-04-19T08:45:26.195Z - info: [conf] The resolved configuration is ...
2019-04-19T08:45:26.196Z - info: "userPanel": {"hideProfilePhoto":false}
2019-04-19T08:45:26.196Z - info: "logger": {"level":"debug"}
2019-04-19T08:45:26.196Z - info: "proxy": {"enable":true,"address":"socks://127.0.0.1:1080"}
2019-04-19T08:45:26.196Z - info: "snippet": {"sorting":"updated_at","sortingReverse":true,"expanded":true,"newSnippetPrivate":false}
2019-04-19T08:45:26.196Z - info: "editor": {"tabSize":4}
2019-04-19T08:45:26.197Z - info: "enterprise": {"enable":false,"host":"github_enterprise_host","token":"token_with_gist_enabled","avatarUrl":"optional_avatar_url"}
2019-04-19T08:45:26.197Z - info: "type": "literal"
2019-04-19T08:45:26.279Z - info: Checking for update
2019-04-19T08:45:26.490Z - debug: -----> registering login-page-ready listener
2019-04-19T08:45:28.726Z - info: [.leptonrc] Use proxy socks://127.0.0.1:1080
2019-04-19T08:45:30.682Z - debug: -----> Inside getCachedUserInfo
2019-04-19T08:45:30.684Z - debug: -----> [false] cachedProfile is undefined
2019-04-19T08:45:30.686Z - debug: -----> [false] cachedToken is undefined
2019-04-19T08:45:30.701Z - debug: -----> Inside LoginPage componentWillMount with loggedInUserInfonull
2019-04-19T08:45:30.702Z - debug: -----> Registering listener for auto-login signal
2019-04-19T08:45:30.702Z - debug: -----> sending login-page-ready signal
2019-04-19T08:45:30.703Z - info: [signal] sending auto-login signal
2019-04-19T08:45:30.788Z - debug: -----> Received "auto-login" signal with loggedInUserInfo null
2019-04-19T08:45:31.777Z - info: Update for version 1.7.3 is not available (latest version: 1.7.3, downgrade is disallowed).
2019-04-19T08:45:31.778Z - debug: checkForUpdatesAndNotify called, downloadPromise is null
2019-04-19T08:45:43.291Z - debug: -----> Inside launchAuthWindow with token undefined
2019-04-19T08:45:43.316Z - debug: loading authUrl https://github.com/login/oauth/authorize?client_id=9e42611bb02db4547abf&scope=gist
2019-04-19T08:45:43.351Z - info: [Dispatch] updateAuthWindowStatus ON
2019-04-19T08:45:55.058Z - info: [Dispatch] updateAuthWindowStatus OFF
2019-04-19T08:45:55.067Z - info: [Dispatch] updateUserSession IN_PROGRESS
2019-04-19T08:45:55.074Z - debug: [REST] Exchanging authCode with access token
2019-04-19T08:46:40.120Z - error: Failed: {"code":"ECONNRESET"}
2019-04-19T08:49:44.445Z - info: The app window is closed