Hey @src1988, is this the same issue that you're having here? https://github.com/NodeBB/NodeBB/issues/1878
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