phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './forumcr/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 ('a33db1786e46cbf74e4c12954f4c4aab', -1, 1422642538, 1422642538, '3210643c', 42, 0, 0)

Line : 187
File : sessions.php