Redis::TimeoutError: Connection timed out

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Redis::TimeoutError: Redis::TimeoutError
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 58, in block in _read_from_socket
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 54, in loop
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 54, in _read_from_socket
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 47, in gets
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 382, in read
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 311, in block in read
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 299, in io
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 310, in read
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 161, in block in call
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 279, in block (2 levels) in process
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 411, in ensure_connected
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 269, in block in process
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 356, in logging
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 268, in process
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 161, in call
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 144, in block in connect
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 344, in with_reconnect
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 114, in connect
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 409, in ensure_connected
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 269, in block in process
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 356, in logging
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 268, in process
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 161, in call
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis.rb", line 270, in block in send_command
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis.rb", line 269, in synchronize
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis.rb", line 269, in send_command
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/commands/connection.rb", line 21, in ping
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/preservation_queue.rb", line 98, in block in connected?
  File "/usr/lib64/ruby/gems/2.7.0/gems/connection_pool-2.3.0/lib/connection_pool.rb", line 65, in block (2 levels) in with
  File "/usr/lib64/ruby/gems/2.7.0/gems/connection_pool-2.3.0/lib/connection_pool.rb", line 64, in handle_interrupt
  File "/usr/lib64/ruby/gems/2.7.0/gems/connection_pool-2.3.0/lib/connection_pool.rb", line 64, in block in with
  File "/usr/lib64/ruby/gems/2.7.0/gems/connection_pool-2.3.0/lib/connection_pool.rb", line 61, in handle_interrupt
  File "/usr/lib64/ruby/gems/2.7.0/gems/connection_pool-2.3.0/lib/connection_pool.rb", line 61, in with
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/preservation_queue.rb", line 97, in connected?
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/preservation_queue.rb", line 44, in next_item
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/preservation_queue.rb", line 66, in wait_next_item
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/cli.rb", line 201, in run_preservation_cycle
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/cli.rb", line 240, in run_tick_loop
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/cli.rb", line 54, in start_server
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/cli.rb", line 305, in block in start_server_as_daemon
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons/application.rb", line 277, in block in start_proc
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons/daemonize.rb", line 84, in call_as_daemon
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons/application.rb", line 281, in start_proc
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons/application.rb", line 307, in start
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons/controller.rb", line 56, in run
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons.rb", line 199, in block in run_proc
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons/cmdline.rb", line 124, in catch_exceptions
  File "/usr/lib64/ruby/gems/2.7.0/gems/daemons-1.4.1/lib/daemons.rb", line 198, in run_proc
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/cli.rb", line 303, in start_server_as_daemon
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/lib/pushmi_pullyu/cli.rb", line 34, in run
  File "/usr/lib64/ruby/gems/2.7.0/gems/pushmi_pullyu-2.0.6/exe/pushmi_pullyu", line 7, in <top (required)>
  File "/usr/bin/pushmi_pullyu", line 23, in load
  File "/usr/bin/pushmi_pullyu", line 23, in <main>
Redis::TimeoutError: Connection timed out
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 58, in block in _read_from_socket
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 54, in loop
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 54, in _read_from_socket
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 47, in gets
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/connection/ruby.rb", line 382, in read
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 311, in block in read
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 299, in io
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 310, in read
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 161, in block in call
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 279, in block (2 levels) in process
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 411, in ensure_connected
  File "/usr/lib64/ruby/gems/2.7.0/gems/redis-4.8.1/lib/redis/client.rb", line 269, in