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 ('21f5ed0153c3fe5e3494e4a1fd6ab7d4', -1, 1462505666, 1462505666, '36572761', -1, 0, 0)

Line : 187
File : sessions.php