Capture Screenshot not working in WebGL

I tried making a script that uses the main camera to take a screenshot of the object. It works well in unity without any errors but I tried to build it as a WebGL. Sadly, it shows an error that tells me to enable the exception to know it. Enabled it and didn’t figure out anything at all. Is there something I missed with the WebGL coding? Any help would be appreciated. Thank you!

using UnityEngine;
using System.Collections;

public class ScreenCapture : MonoBehaviour {
	public int resWidth = 960; 
	public int resHeight = 600;

	public static string ScreenShotName(int width, int height) {
		return string.Format("C:/PerfLogs/screen_{1}x{2}_{3}.png", 
			width, height, 

	public void ScreenshotButton() {
			RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);
			GetComponent<Camera>().targetTexture = rt;
			Texture2D screenShot = new Texture2D(resWidth, resHeight, TextureFormat.ARGB32, false);
			GetComponent<Camera>().Render(); = rt;
			screenShot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0);
			GetComponent<Camera>().targetTexture = null; = null; // JC: added to avoid errors
			byte[] bytes = screenShot.EncodeToPNG();
			string filename = ScreenShotName(resWidth, resHeight);
			System.IO.File.WriteAllBytes(filename, bytes);
			Debug.Log(string.Format("Took screenshot to: {0}", filename));
			Debug.Log("Screenshot Saved!");


Here’s a picture of the error.

To go > Edit > Project Settings > Players

And then verify whether Enable Exceptions is set as given in picture