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 ('dd037e0915902d8d0f54baacc1485529', -1, 1713512400, 1713512400, '12bf84c2', -4, 0, 0)

Line : 187
File : sessions.php