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 ('c423f1dd6ac388dc656b633b2af5ab46', -1, 1713984879, 1713984879, '0aa8c802', 13, 0, 0)

Line : 200
File : sessions.php