obexls: 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/obexls - from package: obexftp

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

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