phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './kidnem998/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 ('c6539ffffbdf6f0e1d9833eaa5a5ed83', -1, 1481352652, 1481352652, '36c58edb', -1, 0, 0)

Line : 187
File : sessions.php