I read the following guide:
https://www.wappalyzer.com/articles/how-to-hide-technologies-from-wappalyzer/
ServerTokens Prod
ServerSignature Off
I entered the following two codes
$ nano "/www/server/apache/conf/httpd.conf"
I restarted the apache2 (setting aapanel)
But it did not work.

I add the following code:
SecServerSignature " "
I restarted the apache2 (setting aapanel)
but it gives an error:
Syntax error on line 508 of /www/server/apache/conf/httpd.conf:
invalid command 'SecServerSignature', per...

Help Me! Please!!!
Thanks!