unicornを再起動できない Capistrano導入済み　would not be accessible in working

データベース更新後、うまく反映されなかったのでunicornを再起動してみたら、これまで繋がっていたのに繋がらなくなってしまいました。

[ec2-user@ip-172-31-44-15 ryotei]$ RAILS_SERVE_STATIC_FILES=1 unicorn_rails -c config/unicorn.rb -E production -D
Traceback (most recent call last):
	10: from /home/ec2-user/.rbenv/versions/2.5.1/bin/unicorn_rails:23:in `<main>'
	 9: from /home/ec2-user/.rbenv/versions/2.5.1/bin/unicorn_rails:23:in `load'
	 8: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/bin/unicorn_rails:209:in `<top (required)>'
	 7: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/bin/unicorn_rails:209:in `new'
	 6: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/http_server.rb:77:in `initialize'
	 5: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/http_server.rb:77:in `new'
	 4: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/configurator.rb:77:in `initialize'
	 3: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/configurator.rb:84:in `reload'
	 2: from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/configurator.rb:84:in `instance_eval'
	 1: from config/unicorn.rb:3:in `reload'
/home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/configurator.rb:592:in `working_directory': config_file=config/unicorn.rb would not be accessible in working_directory=/var/www/current (ArgumentError)
master failed to start, check stderr log for details

I, [2020-03-27T03:46:52.246112 #15065]  INFO -- : worker=0 ready
/home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/http_server.rb:205:in `pid=': Already running on PID:15060 (or pid=/var/www/ryotei/tmp/pids/unicorn.pid is stale) (ArgumentError)
	from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/lib/unicorn/http_server.rb:137:in `start'
	from /home/ec2-user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/unicorn-5.4.1/bin/unicorn_rails:209:in `<top (required)>'
	from /home/ec2-user/.rbenv/versions/2.5.1/bin/unicorn_rails:23:in `load'
	from /home/ec2-user/.rbenv/versions/2.5.1/bin/unicorn_rails:23:in `<main>'
I, [2020-03-27T03:49:56.985806 #15060]  INFO -- : reaped #<Process::Status: pid 15065 exit 0> worker=0
I, [2020-03-27T03:49:56.985936 #15060]  INFO -- : master complete
I, [2020-03-27T03:50:10.393338 #15183]  INFO -- : Refreshing Gem list
I, [2020-03-27T03:50:11.992737 #15183]  INFO -- : listening on addr=0.0.0.0:3000 fd=11
I, [2020-03-27T03:50:11.997961 #15183]  INFO -- : master process ready
I, [2020-03-27T03:50:12.002744 #15223]  INFO -- : worker=0 ready
E, [2020-03-27T03:54:56.180225 #15183] ERROR -- : worker=0 PID:15223 timeout (61s > 60s), killing
E, [2020-03-27T03:54:56.182980 #15183] ERROR -- : reaped #<Process::Status: pid 15223 SIGKILL (signal 9)> worker=0
I, [2020-03-27T03:54:56.185929 #15229]  INFO -- : worker=0 ready
E, [2020-03-27T04:13:42.778450 #15183] ERROR -- : worker=0 PID:15229 timeout (61s > 60s), killing
E, [2020-03-27T04:13:42.782199 #15183] ERROR -- : reaped #<Process::Status: pid 15229 SIGKILL (signal 9)> worker=0
I, [2020-03-27T04:13:42.785316 #15315]  INFO -- : worker=0 ready

config/deploy.rb

lock '3.12.1'

set :application, 'ryotei'

set :branch, 'master'

set :repo_url,  'git@github.com:annaPanda8170/ryotei.git'

set :linked_dirs, fetch(:linked_dirs, []).push('log', 'tmp/pids', 'tmp/cache', 'tmp/sockets', 'vendor/bundle', 'public/system', 'public/uploads')

set :rbenv_type, :user
set :rbenv_ruby, '2.5.1' 

set :ssh_options, auth_methods: ['publickey'],
                  keys: ['~/.ssh/ryotei.pem'] 

set :unicorn_pid, -> { "#{shared_path}/tmp/pids/unicorn.pid" }

set :unicorn_config_path, -> { "#{current_path}/config/unicorn.rb" }
set :keep_releases, 5

after 'deploy:publishing', 'deploy:restart'
namespace :deploy do
  task :restart do
    invoke 'unicorn:restart'
  end
end

config/unicorn.rb

app_path = File.expand_path('../../../', __FILE__)
worker_processes 1
working_directory "#{app_path}/current"
pid "#{app_path}/shared/tmp/pids/unicorn.pid"
listen "#{app_path}/shared/tmp/sockets/unicorn.sock"
stderr_path "#{app_path}/shared/log/unicorn.stderr.log"
stdout_path "#{app_path}/shared/log/unicorn.stdout.log"
timeout 60
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 
  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

見ていただければ幸いです。