t groupies fails for me.

[j0el]

On Fedora 20 - I followed the instructions and everything works except the groupies subcommand.
Any help would be greatly appreciated.

ruby 2.0.0p353 (2013-11-22 revision 43784) [x86_64-linux]
[jberman@localhost ~]$ t groupies
/home/jberman/.gem/ruby/gems/t-2.7.0/lib/t/printable.rb:163:in sort_by': comparison of String with Twitter::NullObject failed (ArgumentError) from /home/jberman/.gem/ruby/gems/t-2.7.0/lib/t/printable.rb:163:inprint_users'
from /home/jberman/.gem/ruby/gems/t-2.7.0/lib/t/cli.rb:421:in groupies' from /home/jberman/.gem/ruby/gems/thor-0.19.1/lib/thor/command.rb:27:inrun'
from /home/jberman/.gem/ruby/gems/thor-0.19.1/lib/thor/invocation.rb:126:in invoke_command' from /home/jberman/.gem/ruby/gems/thor-0.19.1/lib/thor.rb:359:indispatch'
from /home/jberman/.gem/ruby/gems/thor-0.19.1/lib/thor/base.rb:440:in start' from /home/jberman/.gem/ruby/gems/t-2.7.0/bin/t:20:in<top (required)>'
from /home/jberman/bin/t:23:in load' from /home/jberman/bin/t:23:in

'