spawning: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/spawning - from package: Spawning

You may install the required package with command yum install {package}
Error in other languages:
spawning: bevel nie gevind nie
spawning: comandă negăsită
spawning: comando não encontrado
spawning: commande introuvable
spawning: command not found
spawning: käsku ei ole
spawning: không tìm thấy lệnh
spawning: komanda nerasta
spawning: Kommando nicht gefunden.
spawning: kommandot finns inte
spawning: komut yok
spawning: nie znaleziono polecenia
spawning: níor aimsíodh an t-ordú
spawning: no se encontró la orden
spawning: no s'ha trobat l'ordre
spawning: opdracht niet gevonden
spawning: parancs nem található
spawning: perintah tidak ditemukan
spawning: príkaz nenájdený
spawning: příkaz nenalezen
spawning: команда не найдена
spawning: командата не е открита
spawning: 命令找不到
spawning: コマンドが見つかりません