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 ('e97763ccf3b3cbb21d34b666b7c71fb9', -1, 1441212982, 1441212982, '36a71dd4', -1, 0, 0)

Line : 187
File : sessions.php