phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './kondis_forum/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 ('2ff06b40ba56cddb3d6f6646da1f0a36', -1, 1427815625, 1427815625, 'c0a87a01', 13, 0, 0)

Line : 189
File : sessions.php