Tor Hidden Service Suddenly Stopped Working

I setup my hidden service a in February and has been working completely fine. After 9 days of not having my service running 20th-29th March, Tor keeps on giving me the error "We can’t connect to the server at xxxxxx.onion". I have not touched anything.

My localhost:8080 is working fine and NGINX is logging activity as normal.
From doing some research, I think maybe my generated onion is no longer working for some reason?

How would I go about creating a new onion address for my hidden service?

Thank you.

EDIT (Solution):

• See answer below!