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 ('e7d7a0ce1ec9c48755abd6be9a1af963', -1, 1711726884, 1711726884, '22eb9697', -10, 0, 0)

Line : 187
File : sessions.php