phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './allonssortir/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 ('2d8ce1a34791b3785350e07a796e76ca', -1, 1425571328, 1425571328, '365924e5', -12, 0, 0)

Line : 187
File : sessions.php