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 ('931df7e3fd3b29a9a035b01689edea1d', -1, 1422504984, 1422504984, '3691ad5b', 30, 0, 0)

Line : 187
File : sessions.php