chmod: changing permissions of '/opt/lampp/etc/my.cnf': operation not permitted code example

Example 1: chmod: changing permissions of '/opt/lampp': Operation not permitted

sudo chmod 777 /opt/lampp/htdocs
// lazy and risky fix

Example 2: chmod: changing permissions of '/opt/lampp': Operation not permitted

sudo chown –R [Username]:[Groupname] /opt/lampp/htdocs
// Better to change the owner than to allow everyone to access the file