phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './forumradionet/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 ('a3e54c897ffc09d3d61c3b8b337187f0', -1, 1472218149, 1472218149, '1714b88d', -4, 0, 0)

Line : 187
File : sessions.php