reporter-bugzilla: 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
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

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/reporter-bugzilla - from package: libreport-plugin-bugzilla

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