phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('fa1d8ffb49403be4fa4f61c7249881a5', -1, 1713584641, 1713584641, '12ddd0b7', -10, 0, 0)

Line : 187
File : sessions.php