phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table '.\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 ('d63bb81d76d91bbdb196125d758c48cf', -1, 1469349610, 1469349610, '365cb8de', 2, 0, 0)

Line : 187
File : sessions.php