abrt-handle-upload: command not found

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/abrt-handle-upload - from package: abrt

You may install the required package with command yum install {package}

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