fixincludes: 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/fixincludes - from package: fixincludes

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

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