pcreate3: command not found

Have You tried accessing the binary with the full path?

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/pcreate3 - from package: python3-pyramid

You may install the required package with command apt-get install {package}
Error in other languages:
pcreate3: bevel nie gevind nie
pcreate3: comandă negăsită
pcreate3: comando não encontrado
pcreate3: commande introuvable
pcreate3: command not found
pcreate3: käsku ei ole
pcreate3: không tìm thấy lệnh
pcreate3: komanda nerasta
pcreate3: Kommando nicht gefunden.
pcreate3: kommandot finns inte
pcreate3: komut yok
pcreate3: nie znaleziono polecenia
pcreate3: níor aimsíodh an t-ordú
pcreate3: no se encontró la orden
pcreate3: no s'ha trobat l'ordre
pcreate3: opdracht niet gevonden
pcreate3: parancs nem található
pcreate3: perintah tidak ditemukan
pcreate3: príkaz nenájdený
pcreate3: příkaz nenalezen
pcreate3: команда не найдена
pcreate3: командата не е открита
pcreate3: 命令找不到
pcreate3: コマンドが見つかりません