readPYMB: 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/readPYMB - from package: fcitx-tools

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