phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('e8a3e4996c7baf6a6b6f34eae4b94a81', -1, 1413904119, 1413904119, '3213ce31', -1, 0, 0)

Line : 187
File : sessions.php