HTB Academy/Getting Started/Service Scanning (problem)

I ran:
nmap (I.P.) -sV
on Kali and it didn’t work. It told me Service Scan was performed but it wouldn’t tell me what the service was. So I ran the same command on Parrot and it worked. It told me the service. Why the difference? Stupid gawd ■■■■ Kali.

I thought I simplified this post enough so that it was easy to understand and respond to. Why no response?