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 ('ff668fb9f0ca1d926ef9ccc34a8d9c13', -1, 1714740127, 1714740127, '12e0274a', 6, 0)

Line : 158
File : sessions.php