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 ('1ac275cb2049be4c63295bfe03c28642', -1, 1730439021, 1730439021, '038ec6df', -1, 0, 0)

Line : 195
File : sessions.php