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 ('540f0d7fa5613cdfbe9c1627b5f45034', -1, 1422731323, 1422731323, '3652a46a', 20, 0, 0)

Line : 187
File : sessions.php