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 ('49d02a7a2877b92f945d1b6b73dd59d5', -1, 1714142767, 1714142767, '038a7c28', -4, 0, 0)

Line : 187
File : sessions.php