The namespace global already contains a definition for_____

I have a script that I copied and changed the name of it and I changed a specific line of code to play different animations depending on the character. So with this, the game gives the error “The namespace global already contains a definition for…” If I click on this, the line of code it has a problem with is below. How do I fix this?

publicclassvp_DamageHandler : MonoBehaviour

If you change the name of the .cs file, it won’t automatically update the name in the “public class” line. You have to do this manually. So, if you named the script (for example) vp_DamageHandlerModified, you’ll also need to change the class name to this new name.