Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Puppet::Parser::Compiler failed with error ArgumentError: HTTP request path is empty on node

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Updating from 2016.2 to 2016.4 getting an error

Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Puppet::Parser::Compiler failed with error ArgumentError: HTTP request path is empty on node <node>

It started out as a 400 error but now that I have updated the auth.conf its a 500 error. The web portal looks good and reports correctly Just puppet agents don't connect.

-Nathan