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) VALUES ('6a9a66c85dff6fb88b9ee0a121117dd9', -1, 1714341207, 1714341207, '12e05f26', -2, 0)

Line : 158
File : sessions.php