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 ('4b75979ed656aee13b9146d3b1888396', -1, 1441400543, 1441400543, '36ea5fbe', -1, 0, 0)

Line : 187
File : sessions.php