Compiller error when after importing with Unity 5.6.1f1 Personal

Hai, im getting a compiller error in unity 5.6.1f1 Personal

and this is the error list

Hi

It looks like your project might contain a class called Camera which causes a naming conflict with Unity’s built-in type that is also called Camera. To resolve this, rename your Camera class or put it inside a namespace. There is unfortunately nothing I can do to prevent these kinds of naming conflicts.