After updating the Appcelerator CLI, my build started failing. The log message was not very helpful, but Google was and it lead me to this link.
The gist of it is here:
result from /build-verify=> {"success":false,"error":"invalid request","code":"com.appcelerator.security.invalid.session"}, err=null
The answer, perform the following
[korey@localhost ~]$ appc logout
Appcelerator Command-Line Interface, version 6.2.0
Copyright (c) 2014-2017, Appcelerator, Inc. All Rights Reserved.
*** Logged Out ***
[korey@localhost ~]$ appc login
Appcelerator Command-Line Interface, version 6.2.0
Copyright (c) 2014-2017, Appcelerator, Inc. All Rights Reserved.
Appcelerator Login required to continue ...
? Appcelerator ID: me@company.com
? Password: *********
Generating Developer Certificate and Private/Public Keys...
me@company.com logged into organization company.com [100011118]