woff2sfnt: 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/woff2sfnt - from package: woff-tools

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

Error in other languages:
woff2sfnt: bevel nie gevind nie
woff2sfnt: comandă negăsită
woff2sfnt: comando não encontrado
woff2sfnt: commande introuvable
woff2sfnt: command not found
woff2sfnt: käsku ei ole
woff2sfnt: không tìm thấy lệnh
woff2sfnt: komanda nerasta
woff2sfnt: Kommando nicht gefunden.
woff2sfnt: kommandot finns inte
woff2sfnt: komut yok
woff2sfnt: nie znaleziono polecenia
woff2sfnt: níor aimsíodh an t-ordú
woff2sfnt: no se encontró la orden
woff2sfnt: no s'ha trobat l'ordre
woff2sfnt: opdracht niet gevonden
woff2sfnt: parancs nem található
woff2sfnt: perintah tidak ditemukan
woff2sfnt: príkaz nenájdený
woff2sfnt: příkaz nenalezen
woff2sfnt: команда не найдена
woff2sfnt: командата не е открита
woff2sfnt: 命令找不到
woff2sfnt: コマンドが見つかりません