gistfile1.txt

Jul 27 16:41:49 my-app app/web.1: 2018-07-27 23:41:49 +0000: Rack app error handling request { GET /assets/my-asset.gif } 
Jul 27 16:41:49 my-app app/web.1: #<NotImplementedError: NotImplementedError> 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/rack-cache-1.8.0/lib/rack/cache/meta_store.rb:179:in `purge' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/rack-cache-1.8.0/lib/rack/cache/meta_store.rb:46:in `lookup' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/rack-cache-1.8.0/lib/rack/cache/context.rb:173:in `lookup' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/rack-cache-1.8.0/lib/rack/cache/context.rb:66:in `call!' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/rack-cache-1.8.0/lib/rack/cache/context.rb:51:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/newrelic_rpm-4.7.1.340/lib/new_relic/agent/instrumentation/middleware_tracing.rb:92:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/lib/middleware/rack/cloudflare_proxy.rb:15:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/newrelic_rpm-4.7.1.340/lib/new_relic/agent/instrumentation/middleware_tracing.rb:92:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/rack-mini-profiler-0.10.2/lib/mini_profiler/profiler.rb:171:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/newrelic_rpm-4.7.1.340/lib/new_relic/agent/instrumentation/middleware_tracing.rb:92:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/railties-3.2.22.5/lib/rails/engine.rb:484:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/railties-3.2.22.5/lib/rails/application.rb:231:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/railties-3.2.22.5/lib/rails/railtie/configurable.rb:30:in `method_missing' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/newrelic_rpm-4.7.1.340/lib/new_relic/agent/instrumentation/middleware_tracing.rb:92:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/puma-3.11.4/lib/puma/configuration.rb:225:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/puma-3.11.4/lib/puma/server.rb:632:in `handle_request' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/puma-3.11.4/lib/puma/server.rb:446:in `process_client' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/puma-3.11.4/lib/puma/server.rb:306:in `block in run' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/puma-3.11.4/lib/puma/thread_pool.rb:120:in `call' 
Jul 27 16:41:49 my-app app/web.1: /app/vendor/bundle/ruby/2.2.0/gems/puma-3.11.4/lib/puma/thread_pool.rb:120:in `block in spawn_thread' 
Jul 27 16:41:49 my-app app/web.1: Error reached top of thread-pool: not opened for reading (IOError) 
Jul 27 16:41:49 my-app heroku/router: at=error code=H13 desc="Connection closed without response" method=GET path="/assets/my-asset.gif" host=ntot.co request_id=dca44855-124f-4506-bbbf-8dc41ade9cb0 fwd="184.186.227.52,162.158.58.63" dyno=web.1 connect=0ms service=73ms status=503 bytes=0 protocol=https