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 ('781359e9909c02f57438ddff2d195a4a', -1, 1412238232, 1412238232, '3210b13e', -1, 0, 0)

Line : 187
File : sessions.php