capistranoでデプロイする際、unicornが起動しない。

お世話になります。

capistranoを使用してAWSにデプロイしようとしています。

使用環境
・Mac
・rails
・unicorn
・nginx

ローカルで bundle exec cap production deploy　した際、unicornが起動しないというエラーが表示されます。

自分で調べた結果、サーバー側でunicornが起動していないため起こるエラーだと予測しました。

現在EC2でunicornは停止済みで、unicornを起動しようとしてもエラーが表示されます。

unicorn起動コマンド

bundle exec unicorn -c /var/www/rails/myapp/current/unicorn/production.rb -E production -D

表示されたエラー

bundler: failed to load command: unicorn (/var/www/rails/myapp/shared/bundle/ruby/2.7.0/bin/unicorn)

ローカルでbundle exec cap production deployした際に表示されたログ

下記の項目で表示されたログは、サーバー側でunicornが起動していないために起こるものでしょうか？

00:13 unicorn:restart
      01 kill -s USR2 $(< /var/www/rails/myapp/current/tmp/pids/unicorn.pid)
      01 kill:
      01 31634 へのシグナル送信に失敗しました
      01 :
      01 No such process
#<Thread:0x00007f7f313992e0 /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/runners/parallel.rb:10 run> terminated with exception (report_on_exception is true):
Traceback (most recent call last):
	10: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
	 9: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/abstract.rb:31:in `run'
	 8: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/abstract.rb:31:in `instance_exec'
	 7: from /Users/ren/portfolio/myapp/lib/capistrano/tasks/unicorn.rb:51:in `block (3 levels) in <top (required)>'
	 6: from /Users/ren/portfolio/myapp/lib/capistrano/tasks/unicorn.rb:22:in `reload_unicorn'
	 5: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/abstract.rb:80:in `execute'
	 4: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/abstract.rb:148:in `create_command_and_execute'
	 3: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/abstract.rb:148:in `tap'
	 2: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/abstract.rb:148:in `block in create_command_and_execute'
	 1: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/backends/netssh.rb:170:in `execute_command'
/Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/command.rb:97:in `exit_status=': kill exit status: 1 (SSHKit::Command::Failed)
kill stdout: Nothing written
kill stderr: kill: 31634 へのシグナル送信に失敗しました: No such process
	1: from /Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/runners/parallel.rb:11:in `block (2 levels) in execute'
/Users/ren/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/sshkit-1.21.0/lib/sshkit/runners/parallel.rb:15:in `rescue in block (2 levels) in execute': Exception while executing as rentaro8@18.178.157.224: kill exit status: 1 (SSHKit::Runner::ExecuteError)
kill stdout: Nothing written
kill stderr: kill: 31634 へのシグナル送信に失敗しました: No such process
(Backtrace restricted to imported tasks)
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing as rentaro8@18.178.157.224: kill exit status: 1
kill stdout: Nothing written
kill stderr: kill: 31634 へのシグナル送信に失敗しました: No such process