I don't know what has happened to my dokuwiki. I cannot edit it anymore, and further it shows the following errors for everyone.
my wiki address:
http://ee.usc.edu/~ashutosn/CommNetS2016/dokuwiki/doku.php?id=start
Writing /home/users/ashutosn/public_html/CommNetS2016/dokuwiki/data/cache/f/fd0889e4c31c2cc684403ed60273d302.i failed
Unable to save cache file. Hint: disk full; file permissions; safe_mode setting.
Writing /home/users/ashutosn/public_html/CommNetS2016/dokuwiki/data/cache/f/fd0889e4c31c2cc684403ed60273d302.metadata failed
Writing /home/users/ashutosn/public_html/CommNetS2016/dokuwiki/data/cache/d/d7d1572e7a5dd79b27822c5b7083c148.updmsg failed
Can anyone help me with this issue?