The problem that I have now is that it does not allow me to read anything from the server on the web because I accidentally change permissions of some files, they told me that they should be associated with the group of sudoers but I do not know how to do it, I need this urgently, I have access SSH with user ROOT and access to server administration via web
sudo: effective uid is not 0, is sudo installed setuid root?
I get that warning when I try to do sudo with a normal user.