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 ('5d8e6f27209d79f331c8116a5e3d0c9c', -1, 1416738665, 1416738665, '36a790ca', 0, 0, 0)

Line : 172
File : sessions.php