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 ('851fd0d2192ea5d385f1ba198f528135', -1, 1500913946, 1500913946, '36a15c31', 17, 0, 0)

Line : 172
File : sessions.php