phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './illustra_phpbb1/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f6e2ec7ac12f8922809e9ba550ba6d17', -1, 1412230981, 1412230981, '3653ac70', -1, 0, 0)

Line : 187
File : sessions.php