Comments aren't loading, lots of error and blank pages

For an hour I get lots of error messages/pop up when I go to feed posts or an article the comment sections do not load. When I reload the page or try to open a page in a new tab I get this error: 

Disk full (/tmp/#sql-temptable-5e29-3931a-22ce0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")

Just to reply to one comment, I needed 10 tries. 

 Aoi:

We have fixed the issue.

Thank you! <3