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 ('7e7920052b6f92a35e74f7903ea0c385', -1, 1419868588, 1419868588, '36edd51f', 29, 0, 0)

Line : 187
File : sessions.php