celerybeat.pyo: 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"

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