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 ('e8b05e0597d32e6a1c51b1de95b1521e', -1, 1714065835, 1714065835, '12d904ce', -8, 0, 0)

Line : 187
File : sessions.php