Fix WebGL is Not Supported
Here are some things you can try if you're getting the "WebGL is not supported" error:
Update your web browser
Disable extensions
Enable hardware acceleration
Update your graphics driver
To enable hardware acceleration in Chrome, you can:
Go to chrome://settings
Click the Show advanced settings… link at the bottom of the page
Scroll down to the System section and make sure the Use hardware acceleration when available checkbox is checked
Restart Google Chrome