What does this mean? " 2003 You have no space in your account! "

Every time I go back and edit a post for my blog I get this error at the top: ” 2003 You have no space in your account! “
What does this mean and is it affecting my posts in any way that I am not aware of? I can see the posts on the website. But the error still has me worried. Does anyone know what this is?

I have done a little bit of trouble shooting but not much. I updated all plugins and themes and deleted any comments that were waiting for moderation. After all this, I tried again and still got the same error.