Warning: fopen() e fread() (

Hi.
I do not know how because I have nothing touched at FTP, Wordperss returned this error on homepage in the homepage.
The problem remains even if I try to access wp-admin.

Warning: fopen () has been disabled for security reasons in / workdisk / home / web / www .***. com / htdocs / wp-includes / apple / streams.php on line 109

The line is as follows

if (class_exists ( ‘POMO_FileReader’)):
POMO_FileReader class extends POMO_Reader (
POMO_FileReader function ($ filename) (
parent:: POMO_Reader ();
$ this-> _f = fopen ($ filename, ‘r’);
)