go2text_html: 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/go2text_html - from package: libgo-perl

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

Error in other languages:
go2text_html: bevel nie gevind nie
go2text_html: comandă negăsită
go2text_html: comando não encontrado
go2text_html: commande introuvable
go2text_html: command not found
go2text_html: käsku ei ole
go2text_html: không tìm thấy lệnh
go2text_html: komanda nerasta
go2text_html: Kommando nicht gefunden.
go2text_html: kommandot finns inte
go2text_html: komut yok
go2text_html: nie znaleziono polecenia
go2text_html: níor aimsíodh an t-ordú
go2text_html: no se encontró la orden
go2text_html: no s'ha trobat l'ordre
go2text_html: opdracht niet gevonden
go2text_html: parancs nem található
go2text_html: perintah tidak ditemukan
go2text_html: príkaz nenájdený
go2text_html: příkaz nenalezen
go2text_html: команда не найдена
go2text_html: командата не е открита
go2text_html: 命令找不到
go2text_html: コマンドが見つかりません