boboism patch multipart upload session string keys error

[boboism]

NoMethodError - undefined method []' for nil:NilClass: netzke-core (0.12.2) lib/netzke/base.rb:88:ininstance_by_config' netzke-core (0.12.2) lib/netzke/core/railz/controller_extensions.rb:123:in endpoint_dispatch' netzke-core (0.12.2) lib/netzke/core/railz/controller_extensions.rb:85:indispatcher' actionpack (4.2.3) lib/action_controller/metal/implicit_render.rb:4:in send_action' actionpack (4.2.3) lib/abstract_controller/base.rb:198:inprocess_action' actionpack (4.2.3) lib/action_controller/metal/rendering.rb:10:in process_action' actionpack (4.2.3) lib/abstract_controller/callbacks.rb:20:inblock in process_action' activesupport (4.2.3) lib/active_support/callbacks.rb:115:in call' activesupport (4.2.3) lib/active_support/callbacks.rb:553:inblock (2 levels) in compile' activesupport (4.2.3) lib/active_support/callbacks.rb:503:in call' activesupport (4.2.3) lib/active_support/callbacks.rb:88:inrun_callbacks' actionpack (4.2.3) lib/abstract_controller/callbacks.rb:19:in `process_action'