uwsgi_alarm_xmpp: 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/uwsgi_alarm_xmpp - from package: uwsgi-plugin-alarm-xmpp

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

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