vifmrc-converter: 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/vifmrc-converter - from package: vifm

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

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