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 ('0c87e7967d77ee0e069e3f9aacdb0c98', -1, 1441316242, 1441316242, '36a0a3a3', -1, 0, 0)

Line : 187
File : sessions.php