phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './usmleforum/forum_sessions' is marked as crashed and should be repaired

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, is_robot, session_admin) VALUES ('6f9d5686c6c94c5df14f53890926706d', -1, 1487564060, 1487564060, '36a3a443', 29, 0, '0', 0)

Line : 189
File : sessions.php