phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './forum/phpbb2_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('67d5fea62b5b5f033c097885b67ad4f6', -1, 1464666641, 1464666641, '3650b2ac', 8, 0, 0)

Line : 373
File : sessions.php