awsでunicornを起動できない

Question

awsでunicornを起動させようと思っているんですができません

[ec2-user@ip-172-31-43-0 rails_test3]$ unicorn_rails -c config/unicorn.rb -E production -D
master failed to start, check stderr log for details

となります
ログを見ると

[ec2-user@ip-172-31-43-0 rails_test3]$ less log/unicorn.stderr.log
F, [2021-07-20T10:34:56.709901 #17371] FATAL -- : error adding listener addr=/var/tmp/sockets/unicorn.sock
/home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/socket_helper.rb:138:in `initialize': No such file or directory - connect(2) for /var/tmp/sockets/unicorn.sock (Errno::ENOENT)
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/socket_helper.rb:138:in `new'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/socket_helper.rb:138:in `bind_listen'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/http_server.rb:242:in `listen'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/http_server.rb:882:in `block in bind_new_listeners!'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/http_server.rb:882:in `each'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/http_server.rb:882:in `bind_new_listeners!'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/lib/unicorn/http_server.rb:141:in `start'
        from /home/ec2-user/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/unicorn-6.0.0/bin/unicorn_rails:209:in `<top (required)>'
        from /home/ec2-user/.rbenv/versions/3.0.1/bin/unicorn_rails:23:in `load'
        from /home/ec2-user/.rbenv/versions/3.0.1/bin/unicorn_rails:23:in `<main>'

unicornの設定は

root_path = File.expand_path('../../', __FILE__)

# アプリケーションサーバの性能を決定する
worker_processes 2

# アプリケーションの設置されているディレクトリを指定
working_directory root_path

# プロセスIDの保存先を指定
pid "#{root_path}/tmp/pids/unicorn.pid"
#pid "/var/tmp/pids/unicorn.pid"
# ポート番号を指定
#listen "#{root_path}/tmp/sockets/unicorn.sock"
listen "/var/tmp/sockets/unicorn.sock"
# エラーのログを記録するファイルを指定
stderr_path "#{root_path}/log/unicorn.stderr.log"
#stderr_path "/var/log/unicorn.stderr.log"

# 通常のログを記録するファイルを指定
stdout_path "#{root_path}/log/unicorn.stdout.log"
#stdout_path "/var/log/unicorn.stdout.log"

#応答時間を待つ上限時間を設定
timeout 30

# ダウンタイムなしでUnicornを再起動時する
preload_app true

GC.respond_to?(:copy_on_write_friendly=) && GC.copy_on_write_friendly = true

check_client_connection false

run_once = true

before_fork do |server, worker|
  defined?(ActiveRecord::Base) &&
    ActiveRecord::Base.connection.disconnect!

  if run_once
    run_once = false # prevent from firing again
  end

  old_pid = "#{server.config[:pid]}.oldbin"
  if File.exist?(old_pid) && server.pid != old_pid
    begin
      sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
      Process.kill(sig, File.read(old_pid).to_i)
    rescue Errno::ENOENT, Errno::ESRCH => e
      logger.error e
    end
  end
end

after_fork do |_server, _worker|
  defined?(ActiveRecord::Base) && ActiveRecord::Base.establish_connection
end

何が原因でどうすればいいか教えてください
urlは
http://35.75.245.81/
です