How to hide Server Version

Hi, when I use a website to check how secure my cloud is I get this warning: Hide ‚ÄúServer Version‚ÄĚ.
So how can I hide the version to avoid attacks?

Aunt G. knows the answer, give it a try:

I think an attacker can always find the version because of software releases for e.g. Javascript-Files.

Every user can load your nextcloud to login panel and then:

Also the attacker can read

and open the file (e. g. login.js) on github and on the nextcloud to differ the releases:

Installed version to hack:

Normally it is ‚Äústable‚ÄĚ:

Do you know the security scan?