Autoupload backtrace (manual)

gistfile1.txt

ek@lamat:~/.local/lib/git/autoupload$ ruby listen.rb 
/home/ek/.local/lib/git/autoupload/uploads/screenshot4.png
http://i.imgur.com/miGkN.png
/home/ek/.local/lib/git/autoupload/uploads/.listen_test
/home/ek/.local/lib/git/autoupload/imgur.rb:21:in `upload': undefined method `[]' for nil:NilClass (NoMethodError)
	from /home/ek/.local/lib/git/autoupload/imgur.rb:27:in `upload_file'
	from listen.rb:19:in `block in <main>'
	from /usr/local/lib/ruby/gems/1.9.1/gems/listen-0.4.5/lib/listen/listener.rb:190:in `call'
	from /usr/local/lib/ruby/gems/1.9.1/gems/listen-0.4.5/lib/listen/listener.rb:190:in `on_change'
	from /usr/local/lib/ruby/gems/1.9.1/gems/listen-0.4.5/lib/listen/listener.rb:199:in `block in initialize_adapter'
	from /usr/local/lib/ruby/gems/1.9.1/gems/listen-0.4.5/lib/listen/adapter.rb:162:in `call'
	from /usr/local/lib/ruby/gems/1.9.1/gems/listen-0.4.5/lib/listen/adapter.rb:162:in `poll_changed_dirs'
	from /usr/local/lib/ruby/gems/1.9.1/gems/listen-0.4.5/lib/listen/adapters/linux.rb:44:in `block in start'
ek@lamat:~/.local/lib/git/autoupload$