Question The variable webcamTexture of xxxx has not been assigned.

Hey all,
I encountered this error while running a project。

UnassignedReferenceException: The variable webcamTexture of androidCam has not been assigned.
You probably need to assign the webcamTexture variable of the androidCam script in the inspector.

Here is my code（Excerpt from the webcam section）

Code (CSharp):

1. public WebCamTexture webcamTexture;
2.  
3. void Start ()
4.     {
5.  
6.         imgData = new byte[640 * 480 * 4];      
7.         Camera.main.depthTextureMode = epthTextureMode.Depth;
8.  
9.         data = new Color32[640 * 480*24];
10.         tex = new Texture2D (640, 480, TextureFormat.RGBA32, false);
11.         webcamTexture = new WebCamTexture(640, 480, 24);
12.         webcamTexture.Play();
13.        
14.     }
15. void Update ()
16.     {
17.         webcamTexture.GetPixels32(data);
18.     }
19.