vss_strip: 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 CentOS possible default full paths are:

/usr/sbin/vss_strip - from package: burp-server

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/vss_strip - from package: burp

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

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