So you added the Discord widget to your site but it looks like this. Most likely you have not enabled the server status widget in your Discord server settings dashboard.
1. To fix the above error go to your Discord server. Open the drop-down menu (2.)
2.Select Server Settings on the drop down menu.
3.From the setting dashboard select Widgets (1.) Then enable your Server Widget (2.) If you haven't already copy the Server ID (3.) Paste the server Id into the Discord Status widget.