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 ('7ba94a7e389d11fd5fb4ccc26362007c', -1, 1714042386, 1714042386, '03830d25', 6, 0, 0)

Line : 187
File : sessions.php