kunittestmodrunner: 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/bin/kunittestmodrunner - from package: kdelibs

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

On Debian possible default full paths are:

/usr/bin/kunittestmodrunner - from package: kdelibs5-dev

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

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