POFileConsistency: 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 Debian possible default full paths are:

/usr/bin/POFileConsistency - from package: gettext-lint

You may install the required package with command apt-get install {package}

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