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 ('78635237f1f88d8033c1a2b0bf3f6d8e', -1, 1481099731, 1481099731, '36cc6c79', -1, 0, 0)

Line : 187
File : sessions.php