hiddeninput.exe: 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 CentOS possible default full paths are:

/usr/share/php/Symfony/Component/Console/Resources/bin/hiddeninput.exe - from package: php-symfony-console

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