I have implemented snowplow ruby tracker in my ruby on rails application. Recently I have added a line “preload_app!” in config/puma.rb. Now when I restart my development server, puma says a warning like below -
! WARNING: Detected 1 Thread(s) started in app boot:
web |  ! #<Thread:0x0000000a341098@/usr/local/rvm/gems/ruby-2.3.4/gems/snowplow-tracker-0.6.1/lib/snowplow-tracker/emitters.rb:238 sleep> - /usr/local/rvm/gems/ruby-2.3.4/gems/snowplow-tracker-0.6.1/lib/snowplow-tracker/emitters.rb:247:in `pop’
Now tracker doesn’t send/emmit any request. How to solve this issue? Any idea?