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 ('d942d3c22a3e89d89ca5a8afe3557dee', -1, 1713971413, 1713971413, '039269c2', -2, 0, 0)

Line : 187
File : sessions.php