Rate-limit response for application/json throws Error

[janani-vijayan]

Rate-limit response for application/json throws below error which leads to constant restart of the application.

*** Exception NoMethodError in application (undefined method each' for "[\"Rate Limit Exceeded\"]":String) (process 18532, thread #<Thread:0x0000000190a640>): from /<application>/vendor/ruby/2.1.0/gems/rack-1.6.11/lib/rack/body_proxy.rb:31:in each' from //vendor/ruby/2.1.0/gems/rack-1.6.11/lib/rack/body_proxy.rb:31:in each' from /<application>/vendor/ruby/2.1.0/gems/rack-1.6.11/lib/rack/body_proxy.rb:31:in each' from //vendor/ruby/2.1.0/gems/rack-1.6.11/lib/rack/body_proxy.rb:31:in each' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/rack/request_handler.rb:144:in process_request' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_request_handler.rb:520:in accept_and_process_next_request' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_request_handler.rb:274:in main_loop' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/rack/application_spawner.rb:206:in start_request_handler' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/rack/application_spawner.rb:171:in block in handle_spawn_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/utils.rb:470:in safe_fork' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/rack/application_spawner.rb:166:in handle_spawn_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb:357:in server_main_loop' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb:206:in start_synchronously' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb:180:in start' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/rack/application_spawner.rb:129:in start' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb:253:in block (2 levels) in spawn_rack_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb:132:in lookup_or_add' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb:246:in block in spawn_rack_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb:82:in block in synchronize' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb:79:in synchronize' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb:79:in synchronize' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb:244:in spawn_rack_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb:137:in spawn_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb:275:in handle_spawn_application' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb:357:in server_main_loop' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb:206:in start_synchronously' from /usr/local/lib/ruby/gems/2.1.0/gems/passenger-3.0.21/helper-scripts/passenger-spawn-server:99:in

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