cleanup this err msg

[gaak99]

Downloading metadata of 25 latest revisions on Dropbox ...ERROR: push call to Dropbox fail: HTTPSConnectionPool(host='api.dropboxapi.com', port=443): Max retries exceeded with url: /2/users/get_current_account (Caused by NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fae79513cd0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',))