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 ('11c5281bff9f709d80e8c2a42f9e674d', -1, 1714009377, 1714009377, '12df6a64', -8, 0, 0)

Line : 187
File : sessions.php