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 ('9e571331543372ed8512734ebddb07bd', -1, 1455180570, 1455180570, '3692d9b3', 1, 0, 0)

Line : 189
File : sessions.php