uucpsend: 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/lib/news/bin/uucpsend - from package: uucpsend

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

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