Website offline and cannot connect to cPanel

[howard.yu.9627]

[h=3]Hi, I'm currently confused about something. I can't access my website or access my cPanel. Here's the message:[/h]
[h=1]Sorry for the inconvenience![/h][h=3]The filesystem mounted at / on this server is running out of disk space. cPanel operations have been temporarily suspended to prevent something bad from happening. Please ask your system admin to remove any files not in use on that partition.[/h]
I thought we had unlimited bandwidth, storage, and stuff? I'm kinda confused here :/

 

[Dead-i]

It appears all users on the server 'Chopin' are experiencing this problem when trying to access cPanel. This is out of your control and you will need to wait for an administrator to fix this problem - this is not related to your individual disk space because of course it is unmetered.

As a side-effect it also appears MySQL is offline.