gcode_sectioncut: 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/gcode_sectioncut - from package: slic3r

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

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