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 ('b83048d148df7baeb50917b90ba0ca48', -1, 1487564079, 1487564079, '36a3a443', 24, 0, '0', 0)

Line : 189
File : sessions.php