I just removed nodebb-theme-rocket and now the widgets are working. It seems like there was some kind of problem with that theme which screwed up the whole thing. Wierd.
Stats widget a bit off.
Happens here and on my own forum too, nodebb stats says 12 online, but I'm seeing 12 signed in users (online), 1 marked as away and 21 guests. Unless this has been tweaked to only show those with the online status, and not the number of users currently viewing.
Nice catch fixed in widget essentials, it was only displaying registered users.