XAMPP installation problem! NEW TO PHP!

Hello im new to PHP, i want to learn it because we need to do a project using it. And I cant start because i see this red letters in my XAMPP and it freaks me out, please help? thanks!

If you’ve got nothing on the server, try un-installing XAMP and then re-installing. If you ever make any configuration changes with Apache, PHP, or MySQL, they need to be rebooted for the changes to take affect