When I try to edit my site it keeps giving me warnings. I tried to ignore them until I tried to add a page and now this is coming up in my header:

Warning: fopen(/home/barriela/public_html/files/cache_objects/object_65f4665d8012005a4688d42dcd2f3f95) [function.fopen]: failed to open stream: Disk quota exceeded in /home/barriela/public_html/concrete/libraries/cache/default.php on line 44

Warning: fputs(): supplied argument is not a valid stream resource in /home/barriela/public_html/concrete/libraries/cache/default.php on line 45

Warning: fclose(): supplied argument is not a valid stream resource in /home/barriela/public_html/concrete/libraries/cache/default.php on line 46

Can anyone tell me what this means and how I can continue to edit my site without these warnings being posted.

Thanks