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 ('391c75bdb63011fc2a642c1ae9298552', -1, 1480875479, 1480875479, '36cd8cfc', 2, 0, 0)

Line : 189
File : sessions.php