If yes, then I think it's because you're running an incompatible version of widget-essentials with NodeBB. Let us know on that GitHub thread if you're still running into this problem 🙂src1988 created this issue in NodeBB/NodeBB closed When Site loads, I get a socket.io error #1878
Popular Tags Widget
Here is another widget, this one displays the popular tags in your forum. You can set how many tags to display in the widgets ACP.
Nice, How about a 3D tag cloud plugin?
(click on Create Sphere 3D)
Both suitable for different niches. Though I love second one, I will be choosing first as it is more suitable in my kind of forum.