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 ('568bfac90aa24e7dd90ec663c3d93206', -1, 1511231788, 1511231788, '3651c3f0', 6, 0, 0)

Line : 187
File : sessions.php