Just installed Nodebb to Ubuntu server with Nginx reverse proxy according to the guide (https://docs.nodebb.org/installing/os/ubuntu/).
But on the homepage, I see only three words: "Categories", "Register", "Login". The problem is that I need to create the admin user but registration is impossible due to username validation error. Under username field I can see:
A unique username between and characters. Others can mention you with @username.
And whatever I type, I get:
Username too long
I've tried upgrading and rebuilding assets, nothing seems to help.
No errors seen both in the browser console and in the output of ./nodebb dev
Thank you in advance for your help!