Failed to listen on localhost:8000 (reason: Address already in use)

Laravel development server started on http://localhost:8000/ [Fri Jun 17 20:38:43 2022] Failed to listen on localhost:8000 (reason: Address already in use)
8000が使用中!
[root@tk2-117-59322 myapp]# ps ax | grep php 4659 pts/1 S 0:00 /usr/bin/php -S localhost:8000 /var/www/html/myapp/server.php 6467 pts/0 R+ 0:00 grep --color=auto php
使用中のポートを確認する
[root@tk2-117-59322 myapp]# kill 4659
4659が8000を使っているっぽいのでkillする
[root@tk2-117-59322 myapp]# ps ax | grep php 6488 pts/0 R+ 0:00 grep --color=auto php
ちゃんとkillできてる
[root@tk2-117-59322 myapp]# php artisan serve Laravel development server started on http://localhost:8000/
立ち上げれた！