phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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) VALUES ('9e69ee6d2f5861fd3132edc09c6f352e', -1, 1481450104, 1481450104, '369de163', 1, 0)

Line : 158
File : sessions.php