ODK Central non responsive

1. What is the issue? Please be detailed.
I have just installed ODK Central into my self managed cloud server (Digital Ocean) and I can log in smoothly. However, ODK Central is frozen - not responding while trying to create new project.

2. What steps can we take to reproduce this issue?

3. What have you tried to fix the issue?

4. Upload any forms or screenshots you can share publicly below.

What are the specifications of your server (RAM, etc.) and have you configured swap?