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 ('534ef964d17939b1b783529fdb86ff61', -1, 1398404766, 1398404766, '36c5bda5', -1, 0, 0)

Line : 187
File : sessions.php