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 ('17d80a88b611118339562fb6e473d308', -1, 1411445872, 1411445872, '36c4cf37', -1, 0, 0)

Line : 187
File : sessions.php