Have you installed wordpress using bitnami and do you have the bitnami banner in the lower right corner of the page on that wordpress site. Are you looking to remove it

Have you visited the bitnami to get rid of the banner on your wordpress site

https://docs.bitnami.com/general/components/bninfo/

Do you felt , ” should I restart the webserver using apache and do all those stuff? ”

Then here it is a easy solution without going to backend and doing all those stuff,and just getting it away with your wordpress dashboard

Just login to you wordpress admin dashboard quickly and go apperance and customize

Now move to customizing – custom CSS

#bitnami-banner {display:none;}

That’s it now you can see that the banner was removed