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 ('ddd43519556bb818a5fb4a9d974e4104', -1, 1713554578, 1713554578, '03102f0e', -10, 0, 0)

Line : 187
File : sessions.php