phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './realesta_33/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 ('2847fcc2dd30e8142c07f3ffb7059733', -1, 1511191251, 1511191251, '3650e3bd', 6, 0, 0)

Line : 187
File : sessions.php