Current camera name

Dear All,
I'm new to C# and I've tried to access the name of current camera, and I got the name using:
Camera.current.gameObject.name or Camera.current.name.
The problem is that I also got message in console:
NullReferenceException: Object reference not set to an instance of an object
GameTimer.Update ().
I do not understand why, since the value is printed with:
Debug.Log(Camera.current.name);
Could you please tell me what to do to avoid this error?

 

Take a look here https://docs.unity3d.com/ScriptReference/Camera-current.html

Camera.current

is ment for certain rendering events. What you looking for is probably

 Camera.main

 

Thank you. Yes I've read it.
I'm using three cameras (Main + two other Cameras).
I'm switching between them, instead of changing scenes.
On those two other cameras I show Canvas and the Main Camera shows main game in 3D.
I want to check which one is currently used as I want to use timer only when showing this camera.
That's why I need Camera.current not Camera.main.
But maybe there is a different solution, which I do not know for my problem.

 

Sounds like a job for layers. If you place the UI on a extra layer, you can ignore this layer on your two other cameras.