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 ('123643541df3013fc4e6b009be5b70fe', -1, 1781817984, 1781817984, 'd849d9b2', 40, 0, 0)

Line : 187
File : sessions.php