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, session_admin) VALUES ('b9cfb84fc5f58e21e952085b1fac3db6', -1, 1493256216, 1493256216, '1714ca9c', 7, 0, 0)

Line : 187
File : sessions.php