Try removing the port from the url.
And if you are using a domain name, set it to the www.example.com version, as in:
"url" : "http:www.example.com",
(Within the config.json file in nodebb.)
I really like the four colour boxes in the header of community.nodebb.org:
...and have been trying to replicate it, c/w the category icons and post counts. Sadly I haven't been able to get very far.
Would someone be able to post the recipe for setting it up please? I've been delving in Extend > Widgets > Global Header and failing.
You'll want to install this plugin
Superb, thanks @julian much obliged.