phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO blitz_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9ecdd2f195e593a597fd061ce426b36f', -1, 1713977807, 1713977807, '0aa8c802', -7, 0, 0)

Line : 200
File : sessions.php