Answers for "chmod: changing permissions of '/opt/lampp': Operation not permitted"

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

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

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