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 ('5b3d08c71cbde07d297d837daf15dc35', -1, 1511231298, 1511231298, '3651c3f0', -9, 0, 0)

Line : 187
File : sessions.php