I was just able to create a new account via Discourse ID, no problems.
Logging out and signing in again works again, no problems.
No errors in the console:
Whatever changes you made seem to have worked?
It also very responsive, that’s good.
These errors are from sidekiq (the job scheduler) and indicate some kind of system-level problem, not software level.
Are there limits on numbers of threads? open files? Is RAM constrained? How many unicorn threads are you running?
Did you create a swapfile?
Did you configure MaxMind DB downloads?
Again, you can ignore these as they won’t affect functionality, they’ll only show up for people opening the browser dev console.