[28400] ! WARNING: Detected 3 Thread(s) started in app boot:
[28400] ! #<Thread:0x000055d8e4c4f7a8@/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-2.2.0.pre.1/lib/message_bus.rb:667 sleep> - /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/hiredis-0.6.1/lib/hiredis/ext/connection.rb:19:in read' [28400] ! #<Thread:0x000055d8e4c4f550@/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-2.2.0.pre.1/lib/message_bus/timer_thread.rb:38 sleep> - /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-2.2.0.pre.1/lib/message_bus/timer_thread.rb:123:insleep’
[28400] ! #<Thread:0x000055d8e5e75090@/var/www/discourse/lib/discourse.rb:584 sleep> - /var/www/discourse/lib/discourse.rb:587:in `sleep’
[28400] Use Ctrl-C to stop
Why? please help