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 ('08e7a1ee8d5c6c015047dcabcf8f6e31', -1, 1713983712, 1713983712, '0aa8c802', 15, 0, 0)

Line : 200
File : sessions.php