symcryptrun: 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/symcryptrun - from package: gnupg-agent

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