GRANT EXECUTE ON SYS.UTL_FILE

Algien knows why he sent me this error

SQL> conn system
Enter password:
Connected.
SQL> GRANT EXECUTE ON SYS.UTL_FILE TO pld;
GRANT EXECUTE ON SYS.UTL_FILE TO pld
                 *
ERROR at line 1:
ORA-00942: table or view does not exist


SQL>